A $100 V$ ac circuit with frequency $50 Hz$ is applied across a resistance of $10 Ω$ and capacitor of $500 μ F .$ Find current and phase difference between voltage and current.

Important Questions on Alternating Current

MEDIUM

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>EXERCISE 7.1>Q 3

In an electric iron heat produced is same, whether it is connected across an A.C. source or across

50 V

constant voltage. R.M.S. value of the A.C. voltage applied is

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>EXERCISE 7.1>Q 4

Choke coil is a series

EASY

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>EXERCISE 7.1>Q 5

A variable inductor is connected to an AC source. When inductance increases, Then reactance

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JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>EXERCISE 7.1>Q 6

EMF, applied and current in an A.C. circuit are

E = 10 \sqrt{2} \sin ω t V

and

I = 5 \sqrt{2} \cos ω t A

respectively. The average power loss in the circuit is,

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JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>EXERCISE 7.1>Q 7

Reading shown by the hot wire voltmeter used in the circuit here is

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HARD

JEE Main/Advance

IMPORTANT

Gamma Question Bank for Engineering Physics>Chapter 21 - Alternating Current>EXERCISE 7.1>Q 8

In the following circuit, there are two branches. One branch consists of a resistor and capacitor. The other branch consists of resistance and inductor. Find condition such that
(a) Phase difference between voltage and current in two branches is the same.
(b) Magnitude of current in the two branches is the same.
(c) Total current is in phase with the total voltage.

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