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Q.

A current source sends a current I=i0 cosωt. When connected across an unknown load, it gives a voltage output ofv=v0 sinωt+π/4 across that load. Then the voltage across the current source may be brought in phase with the current through it by

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a

connecting an inductor in series with the load

b

connecting a capacitor in series with the load

c

connecting an inductor in parallel with the load

d

connecting a capacitor in parallel with the load

answer is A.

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Detailed Solution

v=v0 sin ωt+π/4=v0 cos ωt-π/4Since V lags current, an inductor can bring it in phase with current.
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