The potential difference across a conductor of resistivity ρ is kept constant. The heat generated in the conductor is directly proportional to:

The device used for measuring potential difference across the ends of a conductor is:

If the length of a conductor is tripled, keeping other factors same, the resistance of the conductor will be:

Which of the following solutions do NOT conduct electricity?

A material of length L and area of cross section has a resistance R . What should be changes in the area of cross section A if its length is tripled to produce the same resistance ?

The shape of the voltage-current graph for a conductor is ___________.

Why are carbon compounds bad conductors of electricity?

The resistance of a metal wire of length 1 m is 50 at 30 °C. Suppose the diameter of the wire is 0.3 mm. Now another wire has the same material and the same length (at 30 °C), but the diameter is increased to 0.6 mm. The resistance of the new wire is:

Consider a wire of resistance 10 Ω If there is another wire of the same material and the same length as the previous one.

but the cross - sectional area is double, then the resistance of the new wire is: