By what factor is the self-inductance of an air solenoid changed if only its number of coil turns,N,is multiplied by five?

Name: By what factor is the self-inductance of an air solenoid changed if only its number of coil turns,N,is multiplied by five?
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Quizplus · Accepted Answer

The self-inductance $L$ of an air solenoid is directly proportional to the square of the number of turns $N$, as given by the formula $L \propto N^2$. Therefore, if $N$ is multiplied by 5, the self-inductance is multiplied by $5^2 = 25$.

By What Factor Is the Self-Inductance of an Air Solenoid