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Electromagnetic Induction & Alternating Currents [AIIMS (All India Institute of Medical Sciences) Physics]: Questions 1 - 4 of 51

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Question 1

Electromagnetic Induction & Alternating Currents

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

Question 2

Electromagnetic Induction & Alternating Currents

Appeared in Year: 1997

Question

MCQ▾

A choke coil should have – [AIIMS 1999]

Choices

Choice (4)Response

a.

High resistance and high inductance

b.

High resistance and low inductance

c.

Low resistance and high inductance

d.

Low inductance and low resistance

Question 3

Electromagnetic Induction & Alternating Currents

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.

Question 4

Electromagnetic Induction & Alternating Currents

Appeared in Year: 2006

Question

MCQ▾

A metallic ring is dropped down, keeping its plane perpendicular to a constant and horizontal magnetic field. The ring enters the region of magnetic field at t = 0 and completely emerges out at t = T sec. The current in the ring varies as – [AIIMS]

Choices

Choice (4)Response

a.

Current Varies with Time (Choice-A)

b.

Current Varies with Time (Choice-B)

c.

Current Varies with Time (Choice-C)

d.

Current Varies with Time (Choice-D)

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