Moving Charges and Magnetism Test

Result

Moving Charges and Magnetism Test - 45

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

The pole pieces of the magnet used in a pivoted coil galvanometer are

A
Plane surfaces of a bar magnet

B
Plane surfaces of a horse-shoe magnet

C
Cylindrical surfaces of a bar magnet

D
Cylindrical surfaces of a horse-shoe magnet
Question 2
4 / -1

A metallic loop is placed in a magnetic field. If a current is passed through it, then

A
The ring will feel a force of attraction

B
The ring will feel a force of repulsion

C
It will move to and fro about its centre of gravity

D
None of the above
Question 3
4 / -1

Two parallel conductors A and B of equal lengths carry currents I and 10 I, respectively, in the same direction. Then

A
A and B will repel each other with same force

B
A and B will attract each other with same force

C
A will attract B, but B will repel A

D
A and B will attract each other with different forces
Question 4
4 / -1

Three long, straight and parallel wires carrying currents are arranged as shown in figure. The force experienced by 10 cm length of wire Q is

A
1.4 × 10^–4 N towards right

B
1.4 × 10^–4 N towards left

C
2.6 × 10^–4 N to the right

D
2.6 × 10^–4 N to the left

Solution
Question 5
4 / -1

A 100 turns coil shown in figure carries a current of 2 amp in a magnetic field B = 0.2 Wb/m². The torque acting on the coil is

A
0.32 Nm tending to rotate the side AD out of the page

B
0.32 Nm tending to rotate the side AD into the page

C
0.0032 Nm tending to rotate the side AD out of the page

D
0.0032 Nm tending to rotate the side AD into the page

Solution
Question 6
4 / -1

A current of 5 ampere is flowing in a wire of length 1.5 metres. A force of 7.5 N acts on it when it is placed in a uniform magnetic field of 2 tesla. The angle between the magnetic field and the direction of the current is

A
30°

B
45°

C
60°

D
90°

Solution
Question 7
4 / -1

A conductor in the form of a right angle ABC with AB = 3 cm and BC = 4 cm carries a current of 10 A. There is a uniform magnetic field of 5 T perpendicular to the plane of the conductor. The force on the conductor will be

A
1.5 N

B
2.0 N

C
2.5 N

D
3.5 N

Solution
Question 8
4 / -1

The coil of a galvanometer consists of 100 turns and effective area of 1 square cm. The restoring couple is 10^–8 N–m/radian. The magnetic field between the pole pieces is 5T. The current sensitivity of this galvanometer will be

A
5 × 10⁴ rad/μ amp

B
5 × 10^–6 per amp

C
2 x 10^–7 per amp

D
5 rad/μ amp

Solution
Question 9
4 / -1

A rectangular coil 20 cm × 20 cm has 100 turns and carries a current of 1 A. It is placed in a uniform magnetic field B = 0.5 T with the direction of magnetic field parallel to the plane of the coil. The magnitude of the torque required to hold this coil in this position is

A
Zero

B
200 N–m

C
2 N–m

D
10 N-m

Solution
Question 10
4 / -1

If a current is passed in a spring, it

A
Gets compressed

B
Gets expanded

C
Oscillates

D
Remains unchanged