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Q. |
Indicate the false statement about the resistance of a wire – |
A. | it depends on material of wire |
B. | it is directly proportional to the length of wire |
C. | it is directly proportional to the area of cross- section of wire |
D. | resistance of metallic wire increases with increase in temperature |
Answer» C. it is directly proportional to the area of cross- section of wire | |
Explanation: The property of conductor due to which it opposes the flow of current through it is called Resistance. It is numerically equal to the ratio of potential difference across its ends to the current flowing through it The SI unit of resistance is ohm. |
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