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A small square loop of wire of side l is placed inside a large square loop of wire of side `L(Lgtgtl)`. The loops are co-planer and their centres coincide. The mutual inductance of the system is proportional toA. `l//L`B. `l^(2)//L`C. `L//l`D. `L^(2)//l` |
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Answer» Correct Answer - B Resonant frequency in an LCR series circuit is `v_(r) = (1)/(2 pi sqrt(LC))` To reduce `v_(r)` , c can be increased, by adding another capacitor in parallel to the first. Choice (b) is correct. |
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