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

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 2

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

Question # 3

Flurescent screen is a screen where visible spot

Question # 4

The current sensitivity of the galvanometer is

Question # 5

Magnetic induction is also called as:

Question # 6

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 7

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

Question # 8

The strength of magnetic field around the current conductor is

Question # 9

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

Question # 10

A solenoid is a coil of wire which is:

Question # 11

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 12

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

Question # 13

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

Question # 14

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 15

Tesla is the unit of

Question # 16

The angle of deflection of coil can be measured by the

Question # 17

How many number of anodes used in electron gun

Question # 18

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 19

The unit of flux density is also given by

Question # 20

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

Question # 21

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 22

magnetic field is a:

Question # 23

In a moving coil galvanometer, the deflecting couple depends upon

Question # 24

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

Question # 25

Current is measured in

Question # 26

The SI unit of magnetic induction is

Question # 27

Electron gun consist of

Question # 28

The unit of magnetic flux is

Question # 29

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

Question # 30

NmA-1 is commonly called:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
3 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
4 The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
5 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
6 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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
7 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
8 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
9 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
10 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

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