What is inductance?

When a current flows through a conductor it produces a magnetic field around the conductor. If this induced magnetic field changes with a changing current it produces an electromotive force (EMF) of 1 Volt which opposes the change. Any sudden change is opposed by the induced current. This is known as self -induction.

Mutual induction is the effect of inducing this EMF upon another conductor in the same magnetic field. An electrical transformer works on this principle of induction, the primary coil windings inducing voltage in the secondary coil windings

The symbol representing Inductance is L.

The SI unit of inductance is the henry and is defined as '1 henry induces an electromotive force of 1 volt in a closed circuit with a uniform change of current of one amp per second'.

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