Magnetic Effects of Current and Magnetism (AIIMS (All India Institute of Medical Sciences) Physics): Questions 20 - 25 of 49

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Question number: 20

» Magnetic Effects of Current and Magnetism » Earth's Magnetic Field

Appeared in Year: 1999

MCQ▾

Question

Angle of dip is 90° at: [AIIMS]

Choices

Choice (4) Response

a.

Magnetic equator

b.

Magnetic poles

c.

None of the above

d.

All of the above

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Question number: 21

» Magnetic Effects of Current and Magnetism » Biot - Savart Law

Appeared in Year: 2003

MCQ▾

Question

The earth’s magnetic field at a given point is. This field is to be annulled by magnetic induction at the center of a circular conducting loop of radius 5.0 cm. The current required to be flown in the loop is nearly: [AIIMS]

Choices

Choice (4) Response

a.

0.4 A

b.

0.2 A

c.

40 A

d.

4 A

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Question number: 22

» Magnetic Effects of Current and Magnetism » Cyclotron

Appeared in Year: 2004

MCQ▾

Question

The cyclotron frequency of an electron gyrating in a magnetic field of 1 T is approximately – [AIIMS]

Choices

Choice (4) Response

a.

280 MHz

b.

28 Hz

c.

28 GHz

d.

2.8 GHz

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Question number: 23

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

Appeared in Year: 2004

MCQ▾

Question

A proton and an α-particle moving with the same velocity and enter into a uniform magnetic field which is acting normal to the plane of their motion. The ratio of the radii of the circular paths described by the proton and α-particle respectively – [AIIMS]

Choices

Choice (4) Response

a.

1: 4

b.

4: 1

c.

1: 16

d.

1: 2

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Question number: 24

» Magnetic Effects of Current and Magnetism » Cyclotron

Appeared in Year: 2001

MCQ▾

Question

Cyclotron is used to accelerate – [AIIMS]

Choices

Choice (4) Response

a.

Electrons

b.

Positive ions

c.

Neutrons

d.

Negative ions

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Question number: 25

» Magnetic Effects of Current and Magnetism » Current Loop as Magnetic Dipole

Appeared in Year: 1990

MCQ▾

Question

The radius of circular loop is r and a current i is flowing in it. The equivalent magnetic moment will be: [AIPMT, AIIMS 98]

Choices

Choice (4) Response

a.

b.

c.

d.

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