Unit IV: Electromagnetic Induction And Alternating Current - Online Test

Q1. In a series resonant RLC circuit, the voltage across 100 Ω resistor is 40 V. The resonant frequency ω is 250 rad/s. If the value of C is 4 µF, then the voltage across L is
Answer : Option C
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Q2. An inductor 20 mH, a capacitor 50 μF and a resistor 40 Ω are connected in series across a source of emf v = 10 sin 340 t. The power loss in AC circuit is
Answer : Option C
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Q3.

The instantaneous values of alternating current and voltage in a circuit are


The average power in watts consumed in the circuit is
Answer : Option D
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Q4. In an oscillating LC circuit, the maximum charge on the capacitor is Q. The charge on the capacitor when the energy is stored equally between the electric and magnetic fields is
Answer : Option C
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Q5. 20/π2 H  inductor is connected to a capacitor of capacitance C. The value of C in order to impart maximum power at 50 Hz is
Answer : Option D
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