Question

What is the unit of EMF of a cell?

Options

• Ohm (Ω)

• Ampere (A)

• Watt (W)

• J/C or volt

Answer 1

EMF is defined as work done per unit charge, where work is measured in joules and charge in coulombs. Therefore, the unit is J/C, which is equivalent to a volt. This is the standard unit for measuring potential difference and electromotive force.