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The self inductance L of a solenoid of length l and area of cross-section A, with a fixed number of turns N increases as |
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Answer» I and A INCREASE. `L=mu_r mu_0 n^2 Al = mu_r mu_0 (N/l)^2 Al [ because n=N/l]` `L=(mu_r mu_0 N^2A)/l` [`mu_r , mu_0`, N=constant] From EQUATION it is clear that, `L prop A/l` So to increase L , A should be INCREASED while l should be DECREASED. |
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