Question
Discuss Self and Mutual Induction.
Answer :
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Skip in 10
Self induction is the property of an electrical circuit by which a change in electric current in the circuit induces an electromotive force (emf) in the same circuit. When current flows through a conductor or a coil, it produces a magnetic field around it. If the current in the circuit changes, the magnetic field associated with it also changes. According to Faraday’s law of electromagnetic induction, a changing magnetic field induces an emf in the circuit. In the case of self induction, this induced emf opposes the change in current that produced it, as stated by Lenz’s law. This opposing emf is called self induced emf and it acts in the same circuit. The magnitude of the induced emf in self induction depends on the rate of change of current and the inductance of the coil. It is mathematically expressed as e = −L (di/dt), where L represents the self inductance of the coil and di/dt is the rate of change of current with
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