Q. 1. What is an alternating current ? Discuss the nature of emf produced when a coil of wire is rotated in a magnetic field.
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Alternating Current (ac) is the type of electricity that we get from plugs in the wall. In an alternating current all of the electric charges switch their direction of flow back and forth
EMF induced in a coil rotating in a magnetic field
They induce an electromotive force (EMF) by rotating a coil in a magnetic field. It is a device that converts mechanical energy to electrical energy. A generator forces electric charge (usually carried by electrons) to flow through an external electrical circuit.
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