Magnetic Effects of Current and Magnetism (AIIMS (All India Institute of Medical Sciences) Physics): Questions 36 - 41 of 49

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Question number: 36

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

MCQ▾

Question

The earth’s magnetic field at a given point isEquation . This field is to be annulled by magnetic induction at the center of a circular conducting loop of radius 8.0 cm. The current required to be flown in the loop is nearly:

Choices

Choice (4) Response

a.

50 A

b.

0.5 A

c.

0.25 A

d.

5 A

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Question number: 37

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

MCQ▾

Question

The magnetic needle of a tangent galvanometer is deflected at an angle 60°. The horizontal component of earth’s magnetic field Equation is along the plane of the coil. The magnetic field of coil:

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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Question number: 38

» Magnetic Effects of Current and Magnetism » Cyclotron

MCQ▾

Question

The cyclotron frequency of an electron gyrating in a magnetic field of 5 T is approximately –

Choices

Choice (4) Response

a.

280 GHz

b.

140 GHz

c.

28 Hz

d.

160 MHz

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Question number: 39

» Magnetic Effects of Current and Magnetism » Cyclotron

MCQ▾

Question

The cyclotron frequency of an electron gyrating in a magnetic field of 2 T is approximately –

Choices

Choice (4) Response

a.

560 MHz

b.

56 GHz

c.

56 Hz

d.

5.6 GHz

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Question number: 40

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

MCQ▾

Question

Which of the following cannot be deflected by magnetic field?

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

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Question number: 41

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

MCQ▾

Question

A charge with Equation and Equation mass moving with a velocity of Equation along Equation axis. A uniform static magnetic field of Equation is acting along the y – axis. The magnetic force (magnitude and direction) on charge –

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Zero

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