Let’s solve 2 numerical problems based on emf and potential difference. Numerical problems based on emf and potential difference 1] If the emf of a battery is 9 V, how much energy is converted from chemical to electrical when 2 C of charge flow? 2] What is the p.d. across a resistor if 24 J […]
The cell uses chemical energy to place the charges in a position of high potential i.e electrical potential energy is stored in a cell. As the charges flow through the resistor, this electrical potential energy is converted to heat, so the resistor gets hot.