ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

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

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ECAT Pre General Science Physics Chapter 14 Electromagnetism

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Question # 1

The direction of lines of force depends upon the direction of

Question # 2

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 3

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

Question # 4

Amperean path is a:

Question # 5

Tesla is the unit of

Question # 6

The SI unit of flux density is.

Question # 7

The force experienced by charged particle is maximum, if it moves

Question # 8

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 9

Method "lamp and scale arrangement" used to measure the

Question # 10

The gavanometer constant of a moving coil galvanometer is given by

Question # 11

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 12

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

Question # 13

Flurescent screen is a screen where visible spot

Question # 14

NmA-1 is commonly called:

Question # 15

if the field is directed along the normal to the area, then flux is:

Question # 16

The unit of magnetic flux is

Question # 17

The SI unit of magnetic induction is tesla which is equal to

Question # 18

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 19

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 20

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 21

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 # 22

The magnetic field in the middle of a solenoid due to current is

Question # 23

Weber is a unit of

Question # 24

Centripetal force for electron is given by

Question # 25

A beam of electrons is provided by an

Question # 26

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 27

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 28

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 29

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 30

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
2 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
3 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
4 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
5 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
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 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
8 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
9 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
10 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)

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