NEET Physics: Questions 653 - 656 of 2098

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Question number: 653

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

MCQ▾

Question

Relative permeability of iron is 5500, than its magnetic susceptibility will be

Choices

Choice (4) Response

a.

5500 x 10 7

b.

5500 x 10 -7

c.

5499

d.

5501

Question number: 654

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

Assertion-Reason▾

Assertion (Ꭺ)

A rectangular coil is suspended freely in non-uniform magnetic field. There is force acting on the coil when a steady current flow through it.

Reason (Ꭱ)

Force acting on each opposite pair of the rectangular coil are equal and opposite.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is false but Ꭱ is true

Question number: 655

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

Assertion-Reason▾

Assertion (Ꭺ)

The magnetic field at the center of the square loop is zero, when the current flow through the loop from a battery connected at the diagonal corner.

Reason (Ꭱ)

Magnetic lines due to a current in a magnetic conductor are circular.

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true but Ꭱ is NOT the correct explanation of Ꭺ

b.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

c.

Ꭺ is true but Ꭱ is false

d.

Both Ꭺ and Ꭱ are false

Question number: 656

» Magnetic Effects of Current and Magnetism » Moving Coil Galvanometer

MCQ▾

Question

A current carrying rectangular coil is placed in a uniform magnetic field. In which orientation, the coil will tend to rotate

(1) The magnetic field is parallel to the plane of the coil

(2) The magnetic field is at 45° with the plane of the coil

(3) In any orientation

(4) The magnetic field is perpendicular to the plane of

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1, 2 and 3 are correct

b.

1 and 2 are correct

c.

1 and 3 are correct

d.

2 and 4 are correct

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