Magnetic Effects of Current and Magnetism (AIIMS Physics): Questions 14 - 18 of 49

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Question number: 14

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

Appeared in Year: 1995

MCQ▾

Question

A beam of electrons moving along + y direction enters in a region of uniform electric and magnetic fields. If the beam goes undeflected through this region then field (B) and (E) are directed respectively: [AIIMS]

Choices

Choice (4) Response
a.

-y axis and -z axis

b.

-x axis and -y axis

c.

+x axis and -x axis

d.

+z axis and -x axis

Question number: 15

» Magnetic Effects of Current and Magnetism » Bar Magnet

Appeared in Year: 1995

MCQ▾

Question

Force between two identical bar magnets whose centers are r meter apart is 4.8 N when their axes are in same line. If separation is increased to 2r, the force between them is reduced to: [AIIMS]

Choices

Choice (4) Response
a.

0.6 N

b.

0.3 N

c.

1.2 N

d.

2.4 N

Question number: 16

» Magnetic Effects of Current and Magnetism » Magnetic Moment

Appeared in Year: 2006

MCQ▾

Question

The magnetic moment has dimensions of – [AIIMS]

Choices

Choice (4) Response
a.

[L2A]

b.

[LT1A]

c.

[L2T1A]

d.

[LA]

Question number: 17

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

Appeared in Year: 2000

MCQ▾

Question

The magnetic needle of a tangent galvanometer is deflected at an angle 30°. The horizontal component of earth’s magnetic field 0.34×104T is along the plane of the coil. The magnetic field of coil: [AIIMS]

Choices

Choice (4) Response
a.

1.96×105T

b.

1.96×104T

c.

1.96×104T

d.

1.96×105T

Question number: 18

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

Appeared in Year: 2001

MCQ▾

Question

A closely wound flat circular coil of 25 turns of wire has diameter of 10 cm and carries a current of 4 ampere. Determine the magnetic flux density at the center of the coil: [AIIMS]

Choices

Choice (4) Response
a.

2.028×104T

b.

1.512×106T

c.

1.679×105T

d.

1.257×103T

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