Magnetic Effects of Current and Magnetism (BITSAT Physics): Questions 1 - 5 of 9

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Question number: 1

» Magnetic Effects of Current and Magnetism » Magnetic Moment

MCQ▾

Question

What is the magnitude of magnetic force per unit length of a wire carrying a current of 5A and making an angle of 30° with direction of a uniform magnetic field of 0.1T ?

Choices

Choice (4) Response

a.

0.55Nm

b.

0.35Nm

c.

0.45Nm

d.

0.25Nm

Question number: 2

» Magnetic Effects of Current and Magnetism » Para, Dia and Ferro-Magnetic Substances

MCQ▾

Question

If magnetic material, which moves from stronger to weaker parts of magnetic field, then it is known as –

Choices

Choice (4) Response

a.

Diamagnetic

b.

Paramagnetic

c.

Ferromagnetic

d.

Anti – ferromagnetic

Question number: 3

» Magnetic Effects of Current and Magnetism » Moving Coil Galvanometer

MCQ▾

Question

We have a galvanometer of resistance 25Ω wire. It is shunted by a 2.5 wire. The part of total current that flow through the galvanometer is given as –

Choices

Choice (4) Response

a.

IgI=411

b.

IgI=111

c.

IgI=3311

d.

IgI=331.1

Question number: 4

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

MCQ▾

Question

S.I. unit of magnetic flux is

Choices

Choice (4) Response

a.

Weber

b.

Weberperm

c.

Weber-m-3

d.

Weberperm4

Question number: 5

» Magnetic Effects of Current and Magnetism » Ampere's Law

MCQ▾

Question

Two parallel wires in free space are 10cm apart and each carries a current of 10A in the same direction. The force exerted by one wire on other per metre of length of the wire is –

Choices

Choice (4) Response

a.

2×102N

b.

2×104N

c.

2×103N

d.

2×106N

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