Electromotive Force (EMF)
Definition
EMF is the potential difference or voltage produced by a source such as a battery or generator. It represents the energy per unit charge that is supplied by the source to move charges around a circuit.
Analogy
Think of EMF like a water pump that pushes water through pipes. The pump provides the energy needed to move the water, just like an EMF source provides the energy needed to move charges in a circuit.
Related terms
Voltmeter: A voltmeter is an instrument used to measure the potential difference or voltage across two points in a circuit. It measures how much electrical energy is being transferred between those points.
Ammeter: An ammeter is an instrument used to measure the electric current flowing through a circuit. It tells us how many charges are passing through it per unit time.
Electric Potential Energy: Electric potential energy refers to the stored energy of charged particles due to their position relative to other charged particles or objects.
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