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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. 0.5 AB. More than 0.5 AC. Less than 0.5 AD. May be less or more than 0.5A depending on the value of L. |
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Answer» Correct Answer - B Since resistor 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 will be more than 0.5A. |
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