A source of EMF is required in order to
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Introduction to Electrical Units and Circuits
For anything to move from rest, there must be some energy change. To enable electrons to move round an electrical circuit, they must receive energy from the source of e.m.f. which is usually a battery or a generator.
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For anything to move from rest, there must be some energy change. To enable electrons to move round an electrical circuit, they must receive energy from the source of e.m.f. which is usually a battery or a generator....................
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