Electromotive force : EMF

 Electromotive Force (EMF)


EMF is the energy per unit charge that a power source, like a battery, provides to a circuit. It's measured in volts (V) and drives electric current through a circuit.


Key Points:


1. Energy source: EMF is the driving force behind electric current.

2. Measured in volts: EMF is quantified in volts (V).

3. Power sources: Batteries, generators, and solar cells are common sources of EMF.


Examples:


1. Batteries: Provide EMF to power devices like flashlights and smartphones.

2. Generators: Convert mechanical energy into electrical energy, producing EMF.

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