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

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Consider the situation given in figure. The wire $A B$ slides on the fixed rails with a constant velocity. If the wire $A B$ is replaced by a semicircular wire, the magnitude of the induced current will:

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Important Questions on Electromagnetic Induction and Alternating Currents

MEDIUM

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 1>Q 31

A jet plane with a wing-span of

25 m

is travelling horizontally towards the east with a speed of

3600 km / hour

. If the Earth's magnetic field at the location is

4 \times 10^{- 4} T

and the angle of dip is

30 °

, then, the potential difference between the ends of the wing is

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Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 1>Q 32

The

A . C .

meter measure its-

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Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 1>Q 33

What would be the mutual inductance between two coils of self inductance $2 mH$ and $8 mH$ placed so close together that the effective flux in one coil is completely linked with the other ?

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Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 1>Q 34

Find the self-inductance of a coil in which an emf of

10 V

is induced when the current in the circuit changes uniformly from

1 A

0.5 A

0.2 s

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Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 1>Q 35

The energy stored in an electromagnet is

400 mJ

when a current

2 A

flows in the coils. The self-inductance of the coil is

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Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 1>Q 36

When the current

i

in a certain inductor coil is

5.0 A

and is increasing at the rate of

10.0 A s^{- 1}

, the potential difference across the coil is

140 V

. When the current is

5.0 A

and decreasing at the rate of

10.0 A s^{- 1}

, the potential difference is

60 V

. The self inductance of the coil is -

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Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 1>Q 37

A wire of fixed length is wound in such a way that it forms a solenoid of length

l

and radius

r

. Its self inductance is found to be

L

. Now, if the same wire is wound in such a way that it forms a solenoid of length

\frac{l}{2}

and radius

\frac{r}{2}

, then the self inductance will be

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Physics Crash Course NEET>Chapter 15 - Electromagnetic Induction and Alternating Currents>Level 1>Q 38

The self induced emf of a coil is

25

volts. When the current in it is changed at uniform rate from

10 A

25 A

1 s

, the change in the energy of the inductance is:

Consider the situation given in figure. The wire AB slides on the fixed rails with a constant velocity. If the wire AB is replaced by a semicircular wire, the magnitude of the induced current will:

Important Questions on Electromagnetic Induction and Alternating Currents

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Consider the situation given in figure. The wire $A B$ slides on the fixed rails with a constant velocity. If the wire $A B$ is replaced by a semicircular wire, the magnitude of the induced current will: