{"id":94112,"date":"2023-10-12T10:37:34","date_gmt":"2023-10-12T08:37:34","guid":{"rendered":"https:\/\/gahzly.com\/%d8%a7%d9%84%d8%b9%d9%88%d8%a7%d9%85%d9%84-%d8%a7%d9%84%d9%85%d8%a4%d8%ab%d8%b1%d8%a9-%d8%b9%d9%84%d9%89-%d8%a7%d9%84%d9%85%d9%82%d8%a7%d9%88%d9%85%d8%a9-%d8%a7%d9%84%d9%83%d9%87%d8%b1%d8%a8%d8%a7\/"},"modified":"2023-10-31T18:18:51","modified_gmt":"2023-10-31T16:18:51","slug":"factors-affecting-electrical-resistance-and-examples","status":"publish","type":"post","link":"https:\/\/gahzly.com\/en\/\u0645\u0642\u0627\u0644\/factors-affecting-electrical-resistance-and-examples\/","title":{"rendered":"Factors affecting electrical resistance and examples"},"content":{"rendered":"<header class=\"entry-header-outer\">\n<div class=\"entry-header\">\n<h1 class=\"post-title entry-title\" style=\"text-align: center\"><span style=\"vertical-align: inherit\"><span class=\"\" style=\"vertical-align: inherit\">Factors affecting electrical resistance and examples<\/span><\/span><\/h1>\n<\/div>\n<\/header>\n<div class=\"featured-area\">\n<div class=\"featured-area-inner\">\n<figure class=\"single-featured-image\">\n<p> Factors affecting electrical resistance and examples<\/figure>\n<\/div>\n<\/div>\n<div class=\"entry-content entry clearfix\">\n<h2><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Factors affecting electrical resistance<\/span><\/span><\/h2>\n<ul>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Length of the wire<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Cross-sectional area of \u200b\u200bthe wire<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">temperature<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Material type<\/span><\/span><\/li>\n<\/ul>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">In order to know the effect of various factors on electrical resistance, we must first learn about Ohm&#8217;s law, which states that the electrical potential difference between the two ends of a metal conductor is directly proportional to the intensity of the electrical current passing through it, and a lot of information can be obtained through this law, To calculate the electrical voltage, we use this relationship: (V=I*R), to calculate the value of the electric current: (I=V\/R), and to calculate the value of electrical resistance: (R=V\/I).<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">We will conduct an experiment on two stations in an electric current to extract the relationship between the factors affecting electrical resistance and current intensity:<\/span><\/span><\/p>\n<p><strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Wire length:<\/span><\/span><\/strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\"> \u00a0We imagine that there is a copper wire 1 m long, connecting point A and B in the electrical circuit. We record the value of the electric current, then we take another copper wire with the same cross-sectional area but different in length. The length of this wire is about 2 m. By connecting the two ends through the new copper wire, we remove the old wire, then we record the value of the new wire, and we discover that the electric current in the second case is half the value of the electric current in the first case, and to explain the situation mathematically, we use Ohm\u2019s law.<\/span><\/span><\/p>\n<ul>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Since the value of the electric current I = V \/ R, the electrical resistance in the second case increased twice as much as the first case<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">This means that the resistance is directly proportional to the length of the wire.<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Therefore, increasing the length of the wire means increasing the electrical resistance and decreasing the value of the electric current<\/span><\/span><\/li>\n<\/ul>\n<p><strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Cross-sectional area of \u200b\u200bthe wire:<\/span><\/span><\/strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\"> \u00a0In the second case, take two copper wires of the same length with different cross-sectional area, make the cross-sectional area of \u200b\u200bthe first wire greater than the cross-sectional area of \u200b\u200bthe second wire, connect the first wire between points A and B in the electrical circuit, and record the intensity of the electric current. Now disconnect the first wire, connect the second wire between the electrical current terminals, and read the ammeter again. You will notice that the electrical current is higher in the first wire than the electrical current in the second wire, which had a smaller cross-sectional area.<\/span><\/span><\/p>\n<ul>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Resistance to electric current is inversely proportional to the cross-sectional area of \u200b\u200bthe wire<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">The resistance of a wire with a small area, i.e. a thin wire, is greater than the resistance of a thick wire.<\/span><\/span><\/li>\n<\/ul>\n<p><strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Type of material:<\/span><\/span><\/strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\"> \u00a0Resistance in an electrical circuit is related to the type of material. If we take a copper wire and an aluminum wire, and connect each of them separately, we will notice a difference in electrical resistance. Connect the copper wire between terminals A and B and record the value of the electrical current, then disconnect the copper wire. Place the aluminum wire between terminals A and B, and record the value of the electric current. You will notice that the value of the electric current in the copper wire is higher than the value of the electric current in the aluminum wire.<\/span><\/span><\/p>\n<ul>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">This means that the resistance of the copper wire is less than that of the aluminum wire<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">The resistance of the wire depends on its quality<\/span><\/span><\/li>\n<\/ul>\n<p><strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Effect of temperature:<\/span><\/span><\/strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\"> If the temperature associated with the electrical circuit increases, the resistance will increase, and therefore temperature is considered one of the factors that affect the value of electrical resistance.<\/span><\/span><\/p>\n<h2><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Examples of resistance in an electrical circuit<\/span><\/span><\/h2>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Electrical resistance is an important element of the electrical circuit, and electrical resistance has many types<\/span><\/span><\/p>\n<ul>\n<li><strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Fixed resistors:<\/span><\/span><\/strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\"> \u00a0such as carbon and wire resistors. The wire resistance is fixed and does not change and is written in numbers or colors. As for the carbon resistance, the resistance is made of carbon, so its resistance is very large and the intensity of the current is low, unlike the wire resistance, which is small, because it is made of a wire wound on a wire. The body of the resistor, its value is qualitatively small while the current intensity is higher. Carbon resistors can be calculated either with a special device or by the colors of the resistor.<\/span><\/span><\/li>\n<li><strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Variable resistors:<\/span><\/span><\/strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\"> They are either mechanical, optical resistance, or thermal resistance. Mechanical resistance is installed by winding or sliding. Optical resistance is by converting light into resistance. The resistance decreases when the intensity of lighting increases, and the resistance increases as the intensity of light decreases. As for the thermal resistance, it is an electronic element. It converts heat into resistance whose value varies depending on the ambient temperature.<\/span><\/span><\/li>\n<\/ul>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Ohm&#8217;s Law To calculate electrical voltage, we use this relationship: (V=I*R), to calculate the value of the electric current: (I=V\/R), and to calculate the value of electrical resistance: (R=V\/I).<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">That is, through Ohm&#8217;s law, we can deduce the value of electrical resistance, and we will present examples in order to further confirm the idea<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Example 1: Find the resistance of the electric current if the value of the electric current is 0.3 A and the applied potential difference is 0.9 V.<\/span><\/span><\/p>\n<ul>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Electrical current 0.3 A<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">The potential difference applied to the electrical current is 0.9 V.<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">We apply the electrical relationship R = V \/ I, we substitute the values \u200b\u200b= 0.9\/0.3, so the electrical resistance equals = 3 \u03a9 ohms<\/span><\/span><\/li>\n<\/ul>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Second example: The heater has a resistance of 50 \u03a9 and is connected to a 220 V source. Calculate the current in the heater.<\/span><\/span><\/p>\n<ul>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">We have the following information: The resistance of the heater is 50 ohms<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">The electric potential difference is 220 volts<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">We substitute this information into Ohm&#8217;s law, which is V = I \u00d7 R<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">We rearrange the expression to obtain the calculation of electric current, which is I = V \/ R<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">We substitute the numbers = 220\/50<\/span><\/span><\/li>\n<li>= 4.4 A<\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">The electric current is 4.4 amps<\/span><\/span><\/li>\n<\/ul>\n<h3><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">What are the factors that affect the resistance value?<\/span><\/span><\/h3>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">The electrons that pass through the electrical wires in the electrical circuit face resistance, and resistance, in its simple definition, is the resistance to the passage of current. The path of the electron from one point to another point is not a straight path, but rather a winding path that faces many types of obstacles, and these are the obstacles that the electron faces in order to reach it. From one point to another, it is the resistance, and the resistance can increase or decrease, and the resistance in the electrical circuit is related to several elements, which are:<\/span><\/span><\/p>\n<ul>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">temperature<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Length of electrical cord<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Sectional area<\/span><\/span><\/li>\n<li><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">The nature of the wire<\/span><\/span><\/li>\n<\/ul>\n<p><strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Temperature<\/span><\/span><\/strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\"> : Resistance increases with temperature. This means that the resistance of the wire increases with the temperature in the wire<\/span><\/span><\/p>\n<p><strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Length of the electrical wire<\/span><\/span><\/strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\"> : Resistance is directly proportional to the length of the electrical wire, and as the length of the electrical wire increases, the electrical resistance increases<\/span><\/span><\/p>\n<p><strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Cross-sectional area<\/span><\/span><\/strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\"> : Resistance increases as cross-sectional area decreases. This means that resistance is inversely proportional to the cross-sectional area of \u200b\u200bthe wire.<\/span><\/span><\/p>\n<p><strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Nature of the material:<\/span><\/span><\/strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\"> \u00a0The nature of the material affects the resistance of the electrical wire<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Combining these relationships and factors brings us to the relationship that electrical resistance is directly proportional to the length of the wire and inversely proportional to the cross-sectional area of \u200b\u200bthe wire, and this means that R=p*L\/\u0650\u0650A<\/span><\/span><\/p>\n<\/div>\n<div dir=\"auto\">\n<h4 style=\"text-align: right\"><strong><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">If you have any inquiry, please contact us freely and we will be happy to serve you.<\/span><\/span><\/strong><\/h4>\n<p style=\"text-align: right\"><strong><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-45299 aligncenter\" title=\"Joyce box outside, 2 holes in the frame, specific sizes. Joyce box outside, 2 holes in the frame, specific sizes\" src=\"https:\/\/i0.wp.com\/www.gahzly.com\/wp-content\/uploads\/2020\/11\/%D9%85%D9%82%D8%A7%D9%841_1-1.jpg?resize=1140%2C776&amp;ssl=1\" alt=\"Joyce box outside, 2 holes in frame, specific sizes\" width=\"1140\" height=\"776\" data-recalc-dims=\"1\" \/><\/strong><\/p>\n<\/div>\n<div dir=\"auto\"><\/div>\n<div dir=\"auto\">\n<p style=\"text-align: center\"><a href=\"https:\/\/gahzly.com\/en\/\"><strong><em><u><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Jezli website for purchasing electrical appliances<\/span><\/span><\/u><\/em><\/strong><\/a><\/p>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">When we say Jeezly website, we are talking about one of the most famous Arab websites that was able, in a very short period of time, to achieve a very large demand for purchases from it by people from various parts and sectors of the Arab world.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">On the Jeezly website, you will find a joint look and all the products that you may need in your home, starting with those for kitchens or bathrooms, but even those for gardens, you will find them on this wonderful site.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">So, if you were lost before and did not know where to go to buy your products on the Internet, now you have the perfect solution, and all you have to do is go to the Jezli website and start choosing the products you want.<\/span><\/span><\/p>\n<p><strong><em><u><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-27987\" title=\"Types of circuit breakers 18 - Work and applications l\" src=\"https:\/\/www.gahzly.com\/wp-content\/uploads\/2020\/05\/%D9%88%D8%B5%D9%84%D8%A9-%D8%B4%D8%B1%D9%8A%D8%B7-%D9%84%D9%8A%D8%AF.jpg\" alt=\"LED strip connection\" width=\"512\" height=\"512\" \/><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">What are the features of Jeezly <\/span><\/span><a href=\"https:\/\/gahzly.com\/en\/\u0645\u0646\u062a\u062c\/power-strip-with-3-outlets-16-amp-black\/\">\u00a0<\/a><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">?<\/span><\/span><\/u><\/em><\/strong><\/p>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Since we are talking about a site that is preferred by many people around the world, there is no doubt that it is a site full of various features and characteristics. 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Rather, the Jezli website deals with major companies, Philips, for example, and other famous brands, so you must remove from your mind the idea of \u200b\u200bthe poor quality of one of the products. <\/span><span style=\"vertical-align: inherit\">Another advantage of the site is that it does not specialize in one type of product, but rather you will find various types of products on it, for example, electrical appliances, hand tools, mechanical devices, paints, packages for establishing apartments, and many other types.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Jeezly website also accepts what is known as the shopping cart, which makes it easy for you to filter the products you want to buy and put them in one package in order to be able to pay with the click of a single button.<\/span><\/span><\/p>\n<p><span style=\"vertical-align: inherit\"><span style=\"vertical-align: inherit\">Accepts multiple payment 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