NEET (National Eligibility cum Medical Entrance Test) Physics: Questions 530 - 533 of 2142

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Question number: 530

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

MCQ▾

Question

A current is flowing through a conducting hollow pipe whose area of cross-section is shown in the fig. The value of magnetic induction will be zero at-

Conducting hollow pipe with points R, P and Q

Conducting Hollow Pipe With Points R, P and Q

A current is flowing through a conducting hollow pipe whose area of cross-section is shown in figure.

Choices

Choice (4) Response

a.

Point Q but not at P and R

b.

Point P, Q and R

c.

Point R but not at P and Q

d.

Point P but not at Q and R

Question number: 531

» Magnetic Effects of Current and Magnetism » Magnetic Susceptibility and Permeability

MCQ▾

Question

For an isotropic medium B, µ 0, H and M are related as (where B, μ 0, H and M have their usual meaning in the context of magnetic material)

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 532

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

MCQ▾

Question

current carrying loop is free to turn in a uniform magnetic field. The loop will then come into equilibrium when its plane is inclined at

Choices

Choice (4) Response

a.

45° to the direction of the field

b.

0° to the direction of the field

c.

135° to the direction of the field

d.

90° to the direction of the field

Question number: 533

» Magnetic Effects of Current and Magnetism » Bar Magnet

MCQ▾

Question

A short bar magnet is placed with its north pole pointing south. The neutral point is 10 cm away from the center of the magnet. If H = 0.4 gauss, calculate magnetic moment of the magnet.

Choices

Choice (4) Response

a.

lAm 2

b.

2Am 2

c.

0.2Am 2

d.

0.1 Am 2

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