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Physics Question on Electric Current

The I-V graph for a conductor at two different temperatures 100°C and 400°C is as shown in the figure. The temperature coefficient of resistance of the conductor is about (in per degree Celsius)
The I-V graph for a conductor at two different temp. 100°C and 400°C

A

3×10-3

B

6×10-3

C

9×10-3

D

12×10-3

Answer

3×10-3

Explanation

Solution

The correct answer is Option (A) : 3×10-3