The figure shows an LCR network connected to a 300 V A C supply. The circuit elements are such that R = X L = X C = 10 Ω . Three voltmeters V 1 , V 2 and V 3 are connected as shown. Which of the following represents the correct set of readings of the voltmeters?

V 1 = 300 V , V 2 = 300 V , V 3 = 300 V

V 1 = 100 V , V 2 = 100 V , V 3 = 100 V

V 1 = 250 V , V 2 = 0 V , V 3 = 150 V

V 1 = 300 V , V 2 = 100 V , V 3 = 100 V

An electric generator is based on_____

Faraday's laws of electromagnetic induction

Motion of charged particles in an electromagnetic field

Fission of Uranium by slow neutrons

EASY

NEET

IMPORTANT

Earn 100

For the given circuit, comment on the type of transformer used :

61.29% studentsanswered this correctly

Important Questions on Electromagnetic Induction and Alternating Currents

MEDIUM

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 2>Q 12

A transformer is employed to

MEDIUM

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 2>Q 13

In the LCR series circuit, the voltmeter and ammeter readings are,

Question Image

MEDIUM

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 2>Q 14

L C R

series circuit is connected to a source of alternating current. At resonance, the applied voltage and the current flowing through the circuit will have a phase difference of-

MEDIUM

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 2>Q 15

Following figure shows an AC generator connected to a block box through a pair of terminals. The box contains possible $R, L, C$ or their combination, whose elements and arrangements are not known to us.

Question Image

Measurements outside the box reveals that $e = 75 \sin (\sin ω t) V, i = 1.5 \sin (ω t + 45 °) A$ , then the wrong statement is

EASY

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 2>Q 16

A series

L R

circuit is connected to a voltage source with

V (t) = V_{0} \sin (ω t)

. After a very large time, current

I (t)

behaves as

(t_{0} ≫ \frac{L}{R})

EASY

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 2>Q 17

When the rms voltages

V_{L}, V_{C}

and

V_{R}

are measured respectively across the inductor

L,

the capacitor

C

and the resistor

R

in a series

L C R

circuit connected to an

A C

source, it is found that the ratio

V_{L} : V_{C} : V_{R} = 1 : 2 : 3.

If the rms voltage of the

A C

source is

100 V,

then

V_{R}

is close to :

MEDIUM

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 2>Q 18

For the LCR circuit, shown here, the current is observed to lead the applied voltage. An additional capacitor

C^{'}

, when joined with the capacitor C present in the circuit, makes the power factor of the circuit unity. The capacitor

C^{'}

, must have been connected in:
Question Image

EASY

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 2>Q 19

An alternating voltage of

220 V, 50 Hz

frequency is applied across a capacitor of capacitance

2 μF .

The impedance of the circuit is

For the given circuit, comment on the type of transformer used :

Important Questions on Electromagnetic Induction and Alternating Currents

Learn and Prepare for any exam you want !