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प्रश्न
State three factors on which the resistance of a wire depends. Explain how the resistance depends on the factors stated by you.
उत्तर
Resistance of a wire depends upon:
(i) Length of wire: Resistance is directly proportional to the length of a wire.
(ii) Area of cross-section of wire: Resistance is inversely proportional to the area of cross-section the wire.
(iii) The temperature of wire: Resistance of a wire is directly proportional to the temperature of the wire.
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