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Which one of the following modifications may increase the senstivity of moving coil galvanometer? `1^(st)` Way : By using spring of smaller torsion constant. `2^(nd)` Way : By using a smaller coil `3^(rd)` Way : By using a stronger magnet `4^(th)` Way: By using a coil having fewer number of turns.A. `1^(st)` and `4^(th)` ways onlyB. `1^(st)` and `3^(rd)` ways onlyC. `1^(st)` and `3^(rd)` waysD. `2^(nd)` and `4^(th)` only |
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Answer» Correct Answer - B Sensitivity `=(BNA)/(K)`, by increasing B (stronger magnet) and decreasing torison constant, k (weaker springs) |
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