ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

In the formula B= µ̻ nl, the symbol n denotes:

Question # 2

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 3

The gavanometer constant of a moving coil galvanometer is given by

Question # 4

The SI unit of magnetic induction is

Question # 5

To convert galvanometer into ammeter we connect

Question # 6

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 7

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 8

Strength of magnetic field is measured in SI units, in:

Question # 9

Lorentz force is defined as

Question # 10

A long wire wound tightly on a cylindrical core is called:

Question # 11

Which one of the following relations is correct?

Question # 12

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 13

The magnetic field outside the solenoid due to current is

Question # 14

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 15

For the conversion of galvanometer into voltmeter, we connect a

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
2 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
3 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
4 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
5 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum
6 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
7 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
8 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
9 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
10 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure

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