Magnetic Effects of Current and Magnetism-Bar Magnet (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 6 - 8 of 27

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Question number: 6

» Magnetic Effects of Current and Magnetism » Bar Magnet

MCQ▾

Question

The correct statements regarding the lines of force of the magnetic field B are

(1) Magnetic intensity is a measure of lines of force passing through unit area held normal to it

(2) Magnetic lines of force form a closed curve

(3) Due to a magnet magnetic lines of force never cut each other

(4) Inside a magnet, its magnetic lines of force move from North pole of a magnet towards its South pole

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.

2 and 4 are correct

d.

1 and 3 are correct

Question number: 7

» Magnetic Effects of Current and Magnetism » Bar Magnet

MCQ▾

Question

Which of the following is/are not the main difference between electric lines of force and magnetic lines of force?

(1) Electric lines of force are closed curves whereas magnetic lines of force are open curves.

(2) Magnetic lines of force cut each other whereas electric lines of force do not cut.

(3) Electric lines of force cut each other whereas magnetic lines of force do not cut.

(4) Electric lines of force are open curves whereas magnetic lines of force are closed curves.

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

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1, 2 and 3 are correct

c.

1 and 2 are correct

d.

2 and 4 are correct

Question number: 8

» Magnetic Effects of Current and Magnetism » Bar Magnet

MCQ▾

Question

The force experienced by a pole of strength 100 Am at a distance of 0.2 m from a short magnet of length 5 cm and pole strength of 200 Am on its axial line will be

Choices

Choice (4) Response

a.

2.5 x 10 -3 N

b.

5.0 x 10 -3 N

c.

5.0 x 10 -2 N

d.

2.5 x 10 -2 N

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