Electromagnetic Induction & Alternating Currents (AIIMS (All India Institute of Medical Sciences) Physics): Questions 8 - 13 of 51

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Question number: 8

» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance

MCQ▾

Question

The mutual inductance of two coils when magnetic flux changes by and current changes by 0.01 A is –

Choices

Choice (4) Response

a.

2 H

b.

3 H

c.

4 H

d.

8 H

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Question number: 9

» Electromagnetic Induction & Alternating Currents » Lenz's Law

Appeared in Year: 2001

MCQ▾

Question

The current flows from A to B as shown in the figure. The direction of the induced current in the loop is – [AIIMS]

Choices

Choice (4) Response

a.

Anticlockwise

b.

Clockwise

c.

Straight line

d.

All of the above

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Question number: 10

» Electromagnetic Induction & Alternating Currents » Reactance and Impedance

Appeared in Year: 2000

MCQ▾

Question

The impedance of a circuit, when a resistance R and an inductor of inductance L are connected in series in an A. C. circuit of frequency (f) is – (AIIMS)

Choices

Choice (4) Response

a.

b.

c.

d.

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Question number: 11

» Electromagnetic Induction & Alternating Currents » Lenz's Law

Appeared in Year: 1997

MCQ▾

Question

In Lenz’s law, there is conservation of – [AIIMS]

Choices

Choice (4) Response

a.

Charge

b.

Energy

c.

Momentum

d.

Current

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Question number: 12

» Electromagnetic Induction & Alternating Currents » Lenz's Law

Appeared in Year: 1999

MCQ▾

Question

The north pole of a magnet is brought near a metallic ring. The direction of the induced current in the ring will be – [AIIMS]

Choices

Choice (4) Response

a.

Anticlockwise

b.

Clock wise

c.

Towards south

d.

Towards north

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Question number: 13

» Electromagnetic Induction & Alternating Currents » Lenz's Law

Appeared in Year: 1982

MCQ▾

Question

As shown in the figure, a copper coil A and a wire are placed on the surface of the paper. A current of 1A flows in the wire in the directions as shown in the figure. If the magnitude of the current is raised to 2 A, the direction of the induced current in the coil [AIIMS, RPMT-88]

Choices

Choice (4) Response

a.

No current will induced

b.

Clock wise

c.

Anti clock wise

d.

None of the above

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