The electric current flowing through any conductor is directly proportional to the electric potential difference across the conductor. Which law is this?

State the formula correlating the electric current flowing in a conductor and the voltage applied across it. Also, show this relationship by drawing a graph. What would be the resistance of a conductor, if the current flowing through it is $0.35 \ A$ when the potential difference across it is $1.4 \ V$?

Which effect of electric current is used in electroplating?

Who discovered the electron?

Derive an expression for equivalent resistance when three resistors of resistance $R_{1}, R_{2}$ and $R_{3}$ are connected in parallel.

Which one of the following is true according to Ohm's law?