Assertion: An emf e is induced in a closed loop where magnetic flux is varied. The induced E → is not a conservative field. Reason: The line integral E → · d l → around the closed loop is non-zero.

If both Assertion and Reason are true and the Reason is the correct explanation of the Assertion.

If both Assertion and Reason are true but Reason is not the correct explanation of the Assertion.

If Assertion is true but Reason is false.

If Assertion is false but Reason is true.

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A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced e.m.f. 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>Competitive Thinking>Q 151

A small square loop of wire of side

l

is placed inside a large square loop of wire of side

L (L > l)

. The loops are coplanar and their centres coincide. The mutual inductance of the system is proportional to

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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>Competitive Thinking>Q 152

The variation of induced emf ( $E$ ) with time ( $t$ ) in a coil if a short bar magnet is moved along its axis with a constant velocity is best represented as

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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>Competitive Thinking>Q 153

The current $I$ in an inductance coil varies with time $t$ according to the graph shown in the figure. Which one of the following plots shows the variation of voltage in the coil with time?

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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>Competitive Thinking>Q 154

When the frequency of the AC voltage applied to a series LCR circuit is gradually increased from a low value, the impedance of the circuit.

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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>Competitive Thinking>Q 155

Assertion: An emf $e$ is induced in a closed loop where magnetic flux is varied. The induced $\vec{E}$ is not a conservative field.
Reason: The line integral $\vec{E} \cdot \vec{d l}$ around the closed loop is non-zero.

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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>Competitive Thinking>Q 156

In A.C. circuit having only capacitor, 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>Competitive Thinking>Q 157

A coil has resistance

30 Ω

and inductive reactance

20 Ω

50 Hz

frequency. If an A.C. source of

200 V

100 Hz

is connected across the coil, the current in the coil 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>Competitive Thinking>Q 159

Same current is flowing in two

a . c .

circuits. First contains only inductance and second contains only capacitance. If frequency of

a . c .

is increased for both, the current will

A wire loop is rotated in a magnetic field. The frequency of change of direction of the induced e.m.f. is

Important Questions on Electromagnetic Induction

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