State the factors on which the strength of electric current flowing in a given conductor depends.

What is the general name of the substances having infinitely high electrical resistance?

Keeping the resistance constant, the potential difference applied across the ends of a component is halved.

By how much does the current change?

Which has less electrical resistance: a thin wire or a thick wire (of the same length and same material) ?

Keeping the potential difference constant, the resistance of a circuit is halved. By how much does the current change?