The force between the two charges is …………… when they are at an infinite separation.

1. finite
2. infinite
3. zero
4. none of the above

The unit of potential difference is:

1. ampere
2. volt
3. ohm
4. coulomb

On increasing the resistance in a circuit, the current in it:

1. decreases
2. increases
3. remains unchanged
4. nothing can be said

A larger wire offers ……………. resistance than a shorter wire.

1. less
2. equal
3. more
4. none of the above