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In the circuit shown in Fig. Sliding contact is moving with uniform velocity towards right. Its value at some instance is `12 (Omega)`. The current in the circuit at this instant of time will be A. `0.5A`B. More than `0.5A`C. less than `0.5A`D. may be less or more than `0.5A` depending on the value of `L`. |
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Answer» Correct Answer - B Since resistance of the circuit is increasing and hence current in the circuit is decreasing so `(di)/(dt)` is negative. Current in the circuit is given by `i=(6-L(di)/(dt))/(12)` Since `(di)/(dt)` is negative so the value of numerator will be more than `6V` and hence current in the circuit at that instant willl be more than `0.5A`. |
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