Which of the following statements are correct about resistance?
(i) Resistance of a conductor is directly proportional to the length.
(ii) Resistance of a conductor is directly proportional to the area of cross-section.
(iii) Resistance of a conductor depends on the nature of the material.
(iv) Resistance of a conductor is inversely proportional to the length
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Answers
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2
Answer:
all of them are correct !
Explanation:
Answered by
0
i, iii
Explanation:
A wire's resistance varies with its length and is inversely proportionate to its cross-sectional area. Resistance is also controlled by the composition of the conductor. Temperature often increases the resistance of a wire or circuit element. The resistance of a conductor is determined by its substance. R = ρL/A is the formula for calculating a conductor's resistance, where R is the resistance in ohms. m is the material's resistivity in,m; L is its length; and A is its cross-sectional area in m2.
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