The quantity of charge flowing past a point multiplied by time is current.

$n$ equal resistors are first connected in series and then connected in parallel. The ratio of the maximum to the minimum resistance is

State Joule's law of heating and write its mathematical form.

$A$ nichrome wire has a resistance of $10\, \Omega$. Find the resistance of another nichrome wire,whose length is three times and area of cross-section four times the first wire.

When is the potential difference between two points said to be $1$ volt?

An electric appliance draws a current of $0.4\, A$ when the voltage is $200\, V$. Calculate the amount of charge flowing through it in one hour.