Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 13

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The phase relationship between current and voltage in a pure resistive circuit is best represented by

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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 14

In a series RL circuit, the resistance and inductive reactance are the same. Then the phase difference between the voltage and current in the circuit is

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Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 15

An AC voltage is applied to a resistor of resistance

R

and an inductor of inductance

L

in series. If

R

and the inductive reactance are both equal to

3 Ω

, the phase difference between the applied voltage and the current in the circuit is

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Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 17

The phase difference between current and voltage in a purely resistive AC circuit is

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Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 18

The phase difference between the alternating current and emf is

\frac{π}{2}

. Which of the following cannot be the constituent of the circuit?

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Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 19

There is no phase difference between source of ac and current when_____connected with source.

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Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 20

A resistance of $400 Ω$ is connected in series with an inductor of $(\frac{3}{π})$ $H$ and this combination is connected across an $A . C .$ source as shown in figure.

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Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 21

The voltage across a pure inductor is represented by the following diagram. Which of the following diagrams will represent the current across it?

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Achieve CUET (UG) Physics Practice Book>Chapter 7 - Alternating Current>Exercise>Q 22

A resistor

R

, an inductor

L

and a capacitor

C

are connected in series to an oscillator of frequency

ν

. If the resonant frequency is

ν_{r}

, then the current lags behind voltage, when