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

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

Question # 2

The permeability of free space is measured in:

Question # 3

Amperean path is a:

Question # 4

F = I(L x B) is a

Question # 5

A resistance used in galvanometer to make it voltmeter is called

Question # 6

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 7

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

Question # 8

A galvanometer is an instrument used to

Question # 9

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

Question # 10

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 # 11

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

Question # 12

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 13

The torque per unit twist of coil is called

Question # 14

The CRO deflects the beam of electrons, when they passes through uniform

Question # 15

The current is measured in

Question # 16

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 17

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

Question # 18

A charged particle moving at right angle to the magnetic field will experience

Question # 19

The SI unit of flux density is.

Question # 20

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

Question # 21

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

Question # 22

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 23

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

Question # 24

The SI unit of magnetic flux is

Question # 25

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

Question # 26

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

Question # 27

A voltmeter is used to measure the

Question # 28

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 29

A current carrying conductor sets up its own:

Question # 30

The SI unit of magnetic induction is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
2 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
3 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
4 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
5 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
6 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
7 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
8 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
9 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
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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