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Electromagnetic Induction & Alternating Currents-Induced EMF and Current [AIIMS (All India Institute of Medical Sciences) Physics]: Questions 1 - 4 of 10

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Question 1

Appeared in Year: 1997

Question MCQ▾

A coil of copper having 1000 turns is placed in a magnetic field perpendicular to its plane. The cross sectional area of the coil is 0.05 m2. If it turns through 180° in 0.01 sec, then the induced emf in the coil is – [AIIMS]

Choices

Choice (4)Response

a.

0.2 V

b.

40 V

c.

0.4 V

d.

4 V

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Question 2

Appeared in Year: 2005

Question MCQ▾

A conducting ring of radius 1 meter is placed in a uniform magnetic field B of 0.01 T, oscillating with frequency 100 Hz with its plane at right angles to magnetic field. What will be the induced electric field? [AIIMS]

Choices

Choice (4)Response

a.

b.

c.

d.

Edit

Question 3

Appeared in Year: 2005

Question MCQ▾

A magnet is made to oscillate with a particular frequency, passing through a coil as shown in figure. The time variation of the magnitude of emf generated across the coil during one cycle is – [AIIMS]

A Magnet Oscillate through a Coil

Choices

Choice (4)Response

a.

Graph of Emf Verses Time (Choice-A)

b.

Graph of Emf Verses Time (Choice-B)

c.

Graph of Emf Verses Time (Choice-C)

d.

Graph of Emf Verses Time (Choice-D)

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Question 4

Question MCQ▾

A coil of copper having 1600 turns is placed in a magnetic field perpendicular to its plane. The cross sectional area of the coil is 0.07 m2. If it turns through 180° in 0.04 sec, then the induced emf in the coil is –

Choices

Choice (4)Response

a.

2.24 V

b.

22.4 V

c.

0.224 V

d.

224 V

Edit