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The current through the coil in figure (i) varies as shown in figure (ii). Which graph best shows the ammeter `A` reading as a function of time? A. (a) B. (b) C. ( c) D. (d) |
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Answer» Correct Answer - A (a) Let `M` is mutual inductance of coil, then the flux in second coil is `phi_(2) = Mi_(1)` ltbr. `e_(2) = (dphi_(2))/(dt) = M(di_(1))/(dt)` `i_(2) = (e_(2))/(R ) = (M)/(R )(di)/(dt)` `rarr` `i_(2) prop (di)/(dt)` |
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