EMF vs Potential Difference

 EMF (Electromotive Force) vs Potential Difference


1. EMF: The energy per unit charge provided by a power source (like a battery) to drive current through a circuit.

2. Potential Difference (Voltage): The difference in electric potential between two points in a circuit, causing current to flow.


Key differences:


1. Source vs Effect: EMF is the source of energy, while potential difference is the effect of that energy in the circuit.

2. Internal vs External: EMF is internal to the power source, while potential difference is measured across external circuit components.


Relationship:


1. EMF drives current: EMF creates a potential difference, which drives current through the circuit.

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