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Find the true statement....

Find the true statement.

A

Ohm's law is applicable to all conductors of electricity.

B

In an electrolyte solution, the electric current is mainly due to the movement of electrons.

C

The resistance of an incandescent lamp is lesser when the lamp is switched on.

D

The resistance of carbon decreases with the increase of temperature.

Text Solution

Verified by Experts

The correct Answer is:
D
The temperature coefficient of the carbon is negative so the resistance of carbon decreases with the increase of temperatures.
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