Question

Self induction of a solenoid is(a) Directly proportional to current flowing through the coil(b) Directly proportional to its length(c) Directly proportional to area of cross-section(d) Inversely proportional to area of cross-section

Answer 1

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Self induction :-

Whenever the current flow through a coil is changed magnetic flux linked through the coil will change also with respect time because of this and EMF and current induced in the coil this phenomenon is called self induction.

L= coefficient of self induction.

It is independent from current flow.

L= mu nod N^2A/L

Your answer is option (c)

Directly proportional to the area of Cross section.

Hope it helps:)

#phoenix