NEET Physics: Questions 589 - 592 of 2098

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Question number: 589

» Magnetic Effects of Current and Magnetism » Electric Charge Moving in Magnetic Field

MCQ▾

Question

A current of 2.0 amp is flowing through a wire of length 50 cm. If this wire be placed at an angle of 60° with the direction of a uniform magnetic field of 5.0 x 10 -4 N/Am the force on the wire will be,

Choices

Choice (4) Response

a.

2.33×104N

b.

5.0×104N

c.

4.33×104N

d.

2.50×104N

Question number: 590

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

MCQ▾

Question

The given figure represents a material which is

Material in magnetic field given above

Material in Magnetic Field Given Above

Here as shown in figure, a material place in magnetic field. Very few lines pass through inside the material, others are curved at material.

Choices

Choice (4) Response

a.

Paramagnetic

b.

Diamagnetic

c.

None

d.

Ferromagnetic

Question number: 591

» Magnetic Effects of Current and Magnetism » Moving Coil Galvanometer

MCQ▾

Question

A solenoid of length 0.4 m and having 500 turns of wire carries a current of 3 A. A thin coil having 10 turns of wire and of radius 0.01 m carries a current of 0.4 A. The torque (in Nm) required to hold the coil in the middle of the solenoid with its axis perpendicular to the axis of the solenoid is (µ 0 = 4π x 10 -7 V-s/A-m)

Choices

Choice (4) Response

a.

0.592 x 10 -4

b.

5.92 x 10 -6

c.

59.2 x 10 -6

d.

0.592 x 10 -6

Question number: 592

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

MCQ▾

Question

Two long straight parallel wires carry currents I 1 and I 2 respectively, in the same direction (as shown). The distance between the wires is R. The magnetic field at the center of the two wires (At point P) will be-

Two long straight parallel wires carry currents I1 and I2

Two Long Straight Parallel Wires Carry Currents I1 and I2

Two long straight parallel wires carry currents I1 and I2 respectively, in same direction. The distance between the wires is R.

(1) μ0(I1I2)πR into the plane of paper (if I 1 > I 2)

(2) μ0(I2I1)πR out of the plane of paper (if I 2 > I 1)

(3) μ0(I1I2)πR2 out of the plane of paper (if I 2 > I 1)

(4) μ0(I2I1)πR2 into the plane of paper (if I 1 > I 2)

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

Choices

Choice (4) Response

a.

2 and 4 are correct

b.

1 and 3 are correct

c.

1, 2 and 3 are correct

d.

1 and 2 are correct

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