Magnetic Effects of Current and Magnetism-Current Loop as Magnetic Dipole (NEET Physics): Questions 14 - 17 of 25

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Question number: 14

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

MCQ▾

Question

The ( τθ ) graph for a current carrying coil placed in a uniform magnetic field is

Choices

Choice (4) Response
a.
Graph of torque τ→θ (option A)

Graph of Torque Τ→Θ (Option A)

Figure shows the graph of torque τ→θ. It is not liner.

b.
Graph of torque τ→θ (option B)

Graph of Torque Τ→Θ (Option B)

Figure shows the graph of torque τ→θ. It is not liner.

c.
Graph of torque τ→θ (option C)

Graph of Torque Τ→Θ (Option C)

Figure shows the graph of torque τ→θ. It is liner.

d.
Graph of torque τ→θ (option D)

Graph of Torque Τ→Θ (Option D)

Figure shows the graph of torque τ→θ. It is not liner.

Question number: 15

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

MCQ▾

Question

A circular current carrying coil has a radius R. The distance from the center of the coil on the axis where the magnetic, induction will be 18 to its value at the center of the coil, is

Choices

Choice (4) Response
a.

5×10 -3 tesla

b.

5×10 -4 tesla

c.

2×10 -3 tesla

d.

5×10 -2 tesla

Question number: 16

» 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: 17

» 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

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