In an a.c circuit that contains only a capacitor, the vol...
In an a.c circuit that contains only a capacitor, the voltage lags behind the current by
180°
90°
60°
30°
Correct answer is B
In a purely capacity circuit, voltage lags behind current by 90°, or current leads voltage by 90°
A metal sheet of area 100cm2 was heated through 70°C. Calculate its new area if the linear ...
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A cell of e.m.f. 1.5V and internal resistance 1.0Ω is connected to two resistor of resistan...