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The peak value of induced $e . m . f .$ in a coil of $5000$ turns each and of area $50 {cm}^{2}$ rotating at $600 r . p . m .$ about an axis at right angles to the field of $8 \times 10^{- 4} Wb m^{- 2}$ is,

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Important Questions on Electromagnetic Induction

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Electromagnetic Induction>Critical Thinking>Q 44

The number of turns in the coil of an A.C. generator is

5000

and the area of the coil is

0.25 m^{2} .

The coil is rotated at the rate of

100 cycles s^{- 1}

in a magnetic field of

0.2 Wb m^{- 2}

. The peak value of the

e . m . f .

generated is nearly,

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Electromagnetic Induction>Critical Thinking>Q 45

In a region of a uniform magnetic induction

B = 10^{- 3} T,

a circular coil of radius

40 cm

and resistance

π^{3} Ω

is rotated about an axis which is perpendicular to the direction of

B

and which forms a diameter of the coil. If the coil rotates at

400 r . p . m .

, the amplitude of the alternating current induced in the coil is,

EASY

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Electromagnetic Induction>Critical Thinking>Q 46

The general equation for the instantaneous e.m.f. of a generator (frequency

50 cycles s^{- 1}

), whose peak voltage is

200 V

will be,

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Electromagnetic Induction>Critical Thinking>Q 47

The instantaneous current in a circuit is

I = \sin (ω t + ϕ) A

. What is the

r . m . s

value of the current?

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Electromagnetic Induction>Critical Thinking>Q 48

An alternating voltage of

e = 100 \sqrt{2} \sin (100 t) V

is connected to a condenser of

0.5 μF

through an A.C. ammeter. The reading of the ammeter will be,

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MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Electromagnetic Induction>Critical Thinking>Q 49

A hot wire ammeter reads

10 A

in A.C. circuit. The peak value of the current is,

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IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Electromagnetic Induction>Critical Thinking>Q 50

40 Ω

electric heater is connected to

200 V

50 Hz

mains supply. The peak value of electric current flowing in the circuit is approximately,

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IMPORTANT

MHT-CET TRIUMPH Physics Multiple Choice Questions Part - 2 Based on Std. XI & XII Syllabus of MHT-CET>Chapter 10 - Electromagnetic Induction>Critical Thinking>Q 51

20 V

A.C. is applied to a circuit, consisting of a resistance and a coil with a negligible resistance. If the voltage across the resistance is

12 V

, the voltage across the coil is,

The peak value of induced e.m.f. in a coil of 5000 turns each and of area 50 cm2 rotating at 600 r.p.m. about an axis at right angles to the field of 8×10-4 Wb m-2 is,

Important Questions on Electromagnetic Induction

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The peak value of induced $e . m . f .$ in a coil of $5000$ turns each and of area $50 {cm}^{2}$ rotating at $600 r . p . m .$ about an axis at right angles to the field of $8 \times 10^{- 4} Wb m^{- 2}$ is,