Magnetic Effects of Current and Magnetism (AIIMS Physics): Questions 22 - 26 of 49

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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

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

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

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.

2πir

b.

iπr2

c.

ir2

d.

ir

Question number: 26

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

Appeared in Year: 2004

MCQ▾

Question

A circular coil of radius R carries an electric current. The magnetic field due the coil at a point on the axis of the coil located at a distance r from the center of the coil, such that r>>R varies as – [AIIMS]

Choices

Choice (4) Response

a.

1r3

b.

1r2

c.

1r

d.

1r32

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