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 magnetic field outside the solenoid due to current is

Question # 2

The permeability of free space is measured in:

Question # 3

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

Question # 4

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

Question # 5

Tesla is the unit of

Question # 6

F = I(L x B) is a

Question # 7

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

Question # 8

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 # 9

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

Question # 10

Lorentz force is defined as

Question # 11

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

Question # 12

A resistance used in galvanometer to make it voltmeter is called

Question # 13

The most suitable material for permanent magnet is

Question # 14

A voltmeter is used to measure the

Question # 15

Current is measured in

Question # 16

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 # 17

The field around a moving charge is called

Question # 18

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 19

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

Question # 20

A field is uniform and much stronger:

Question # 21

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

Question # 22

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 # 23

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

Question # 24

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

Question # 25

The SI unit of magnetic induction is

Question # 26

A beam of electrons is provided by an

Question # 27

The unit of flux density is also given by

Question # 28

Method "lamp and scale arrangement" used to measure the

Question # 29

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

Question # 30

Resistance is measured in

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
2 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
3 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
4 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
5 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
6 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
7 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
8 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
9 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
10 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

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