Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 5

EASY

NEET

IMPORTANT

Earn 100

The mean value of current $I = I_{0} \cos ω t$ from $t = 0$ to $t = \frac{π}{ω}$ is

100% studentsanswered this correctly

Important Questions on Alternating Current

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 6

The current in an

A C

circuit is given by

I = I_{0} \sin (50 π) t,

where

t

is in second. The time interval in which it will reach from zero to its peak value is

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 7

A capacitor of capacitance

2 mF

and resistor of resistance

12 Ω

are connected in series with voltage source

V = (195 \sqrt{2} volts)

[\sin (100 rad s^{- 1}) t] .

The average power dissipated in the circuit will be

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 8

In an

A C

circuit as shown in the figure, the source is of

r m s

voltage

200 V

and variable frequency. At resonance, the circuit
Question Image

Question Image

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 9

A current of

2 A

is flowing at

220 V

in the primary coil of a transformer. If current in the secondary coil is

1 A

and efficiency of the transformer is

80 %

then the voltage produced in the secondary coil will be

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 10

In an

L - C

oscillation maximum charge on capacitor can be

Q_{0} .

If at any instant electrical energy is

{(\frac{3}{4})}^{t h}

of the magnetic energy then the charge on capacitor at that instant is

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 11

Choose the correct statement about the choke coil.

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 12

The reading of the A.C. voltmeter in the network shown in figure is (where

V

is in volt)
Question Image

Question Image

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 22 - Alternating Current>Assignment Set-2>Q 13

An electric bulb rated

100 W, 100 V

has to be operated across

141.4 V, 50 Hz

A C

supply. The capacitance of the capacitor which has to be connected in series with bulb so that bulb will glow with full intensity is