1.

Define self inductance. Derive an expression for self inductance of a long solenoid

Answer»

ductance is defined as the induction of a voltage in a current-carrying wire when the current in the wire itself is changing.Consider a SOLENOID having N NUMBER of turns and the current flowing through that be I and solenoid is having length of L and radius of R. The magnetic field within the solenoid is given by B=u0*N*I The total flux through the solenoid wire which has having NL turns is Flux=NL*B*pi*R*R The expression for inductance is =flux/current HENCE the self inductance of solenoid is =u0*N^2*pi*R^2*hope it helps you



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