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The phasor diagram for an a.c. circuit containing inductor only as shown below is (l is the current across inductor and VL is the potential difference across inductor)

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Important Questions on Alternating Current

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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 6
The R.M.S. value of sinusoidal current and voltage related to the peak current I0 and peak voltage E0 respectively as
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 7
The quality factor of a series LCR circuit is given as
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 8
A capacitor of 2μF is connected to an alternating voltage source, E=1002sin(50t)V. The reading of the ammeter would be
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 9
The r.m.s. value of the voltage E=2002sin(310t-ϕ)∨ is
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 10
An inductor of reactance XL=4 Ω and resistor of resistance R=3 Ω are connected in series with a voltage source of emf ε=(20 V)[sin(100π rad s-1)t]. The current in the circuit at any time t will be
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 11
The mean value of the current I=I0sinωt over two complete cycle is _____.
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 12
At resonance, the impedence of series LCR circuit is _____.
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Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-1>Q 13
The ratio of ω0LR is called _____ factor of the circuit.