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

Galvanometer is a device used for the detection of

Question # 2

The SI unit of flux density is

Question # 3

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 4

Method "lamp and scale arrangement" used to measure the

Question # 5

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 6

Resistance is measured in

Question # 7

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 # 8

F = I(L x B) is a

Question # 9

A field is uniform and much stronger:

Question # 10

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

Question # 11

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 # 12

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

Question # 13

Electron gun consist of

Question # 14

The direction of lines of force depends upon the direction of

Question # 15

For the conversion of galvanometer into voltmeter, we connect a

Question # 16

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 17

The SI unit of magnetic induction is

Question # 18

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

Question # 19

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 20

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

Question # 21

The unit of flux density is also given by

Question # 22

Current is measured in

Question # 23

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 24

When current passes through a solenoid coil, it behaves like a

Question # 25

Which one of the following relations is correct?

Question # 26

The SI unit of magnetic flux is

Question # 27

How many number of anodes used in electron gun

Question # 28

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 # 29

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 30

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
A. Maximum
B. Minimum
C. Zero
D. Very small
2 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
3

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
4 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
5 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
6 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
7 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
8 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
9 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B
10 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current

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