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Inductors - Technical MCQs

Q1:

During a current change, the ability of a conductor to produce counter emf within itself is called:

A back emf

B self-induction

C a henry

D impedance

ANS:B - self-induction

The property of self-inductance is a particular form of electromagnetic induction. Self inductance is defined as the induction of a voltage in a current-carrying wire when the current in the wire itself is changing. In the case of self-inductance, the magnetic field created by a changing current in the circuit itself induces a voltage in the same circuit. Therefore, the voltage is self-induced.