{"id":94161,"date":"2023-10-12T14:00:51","date_gmt":"2023-10-12T12:00:51","guid":{"rendered":"https:\/\/gahzly.com\/%d8%aa%d8%b9%d8%b1%d9%8a%d9%81-%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%d8%a6%d9%8a%d8%a9-%d9%88%d9%82%d8%a7%d9%86%d9%88%d9%86-%d8%a3%d9%88%d9%85\/"},"modified":"2023-12-07T01:02:52","modified_gmt":"2023-12-06T23:02:52","slug":"definition-of-electrical-resistance-and-ohms-law-and-exercises-on-them-with-their-solutions","status":"publish","type":"post","link":"https:\/\/gahzly.com\/en\/\u0645\u0642\u0627\u0644\/definition-of-electrical-resistance-and-ohms-law-and-exercises-on-them-with-their-solutions\/","title":{"rendered":"Definition of electrical resistance and Ohm’s law…and exercises on them with their solutions"},"content":{"rendered":"
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Definition of electrical resistance and Ohm’s law…and exercises on them with their solutions<\/span><\/span><\/h1>\n<\/div>\n<\/header>\n
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Definition of electrical resistance and Ohm’s law…and exercises on them with their solutions<\/figure>\n<\/div>\n<\/div>\n

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Definition of electrical resistors<\/span><\/span><\/h2>\n

Resistance is an electrical component that limits the flow of electric current within a circuit. The example most often used to explain this idea is to compare the electric current to the flow of water inside a hose. A resistor can be likened to a contraction inside the hose to limit the flow of water.<\/span><\/span><\/p>\n

The majority of those interested in physics know Ohm’s Law of Resistance:\u00a0 <\/span><\/span>V = IR<\/span><\/span><\/strong> \/ <\/span><\/span>V<\/span><\/span><\/strong> , and <\/span><\/span>V\u00a0<\/span><\/span><\/strong> means the voltage through the resistance, and <\/span><\/span>I<\/span><\/span><\/strong> \u00a0is the current flowing inside the resistor, while\u00a0 <\/span><\/span>R<\/span><\/span><\/strong> \u00a0is the resistance. This is the equation that links current, voltage, and resistance, and it is the rule for working with resistors and negative components. The other.<\/span><\/span><\/p>\n

Under the microscope, resistors are made up of a variety of materials that conduct electricity, but they are not a perfect solution, so the ability of electrons to flow is limited by the atomic structure of the materials that are chosen, by different properties of the conductor such as the conductive material, as well as the surface area and duration of use, possibly. Resistance Control Due to precision, resistance is measured by Ohm’s law, and the symbol for resistance is <\/span><\/span>\u03a9.<\/span><\/span><\/strong><\/p>\n

Definition of Ohm’s law<\/span><\/span><\/h2>\n

Ohm’s law can be used to ensure the correct and constant values \u200b\u200bof the electrical circuit, the rates of electrical current, methods of supplying voltage, and reducing the voltage. If, for example, the test tool knows to measure a current that is higher than normal, this may indicate that the resistance has decreased or that the voltage has increased, which It determines a high voltage condition. This may indicate a problem with the display or circuit.<\/span><\/span><\/p>\n

In a direct current circuit, measuring a current that is weaker than normal may indicate that the voltage has decreased, or the resistance of the circuit has increased. Possible reasons for an increase in resistance are weak, loose, corrupted, or damaged connectors.<\/span><\/span><\/p>\n

Loads are placed in a circuit on electrical current. Loads can be through any type of component, such as: small electrical appliances, computers, or household appliances. Most of these loads are contained within a nameplate with an attached sticker. These nameplates provide a safety certificate and many reference numbers. .<\/span><\/span><\/p>\n

Technicians say about the nameplates written on the devices to indicate the standard values \u200b\u200bof voltage and current. During the test, if the technicians realize that the customary values \u200b\u200bare not shown on the various digital measuring devices or their clamp meters, then Ohm\u2019s law can be used to find out which part of the circuit is facing a problem, and from here the determination is made. The place where the problem may exist.<\/span><\/span><\/p>\n

Factors on which electrical resistance depends<\/span><\/span><\/h2>\n

Resistance is considered the resistance to the flow of electric current through a conductor. The resistance of an electrical circuit can be measured digitally. Conductor and resistance are inversely proportional. The higher the conductivity, the lower the resistance.<\/span><\/span><\/p>\n

Resistance = potential difference \/ current.<\/span><\/span><\/strong><\/p>\n

The factors on which the conductor depends, it depends on the following factors:<\/span><\/span><\/p>\n