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A capacitor acts as an infinite resistance for

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Important Questions on Alternating Current

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Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 32
Of the following about capacitive reactance which is correct
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Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 33
A capacitor has capacitance C and reactance X, if capacitance and frequency become double, then reactance will be
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Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 34
Which of the following curves correctly represents the variation of capacitive reactance XC with frequency f?
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IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 35
Due to which component, the current in AC circuit leads the voltage in phase-
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CUET (UG)
IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 36
The unit of ωC is-
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IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 37
A capacitor 50 μF is connected to a supply of 220 V and angular frequency 50 rad s-1. The value of rms current in the circuit is
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CUET (UG)
IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 38
The capacitive reactance in an A.C. circuit is
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IMPORTANT
Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 39
When an AC voltage is applied to a L-C-R circuit, which of the following is true?