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 strength of magnetic field around the current conductor is

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

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

Question # 4

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

Question # 5

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

Question # 6

In a moving coil galvanometer, the deflecting couple depends upon

Question # 7

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

Question # 8

Current is measured in

Question # 9

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

Question # 10

F = I(L x B) is a

Question # 11

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 # 12

The torque per unit twist of coil is called

Question # 13

NmA-1 is commonly called:

Question # 14

A current carrying conductor sets up its own:

Question # 15

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 # 16

Tesla is the unit of

Question # 17

Ammeter is used to measure

Question # 18

CRO deflects the beam of

Question # 19

A resistance used in voltmeter is called

Question # 20

A long wire wound tightly on a cylindrical core is called:

Question # 21

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 # 22

The unit of flux density is also given by

Question # 23

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

Question # 24

A beam of electrons is provided by an

Question # 25

Method "lamp and scale arrangement" used to measure the

Question # 26

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

Question # 27

The field around a moving charge is called

Question # 28

The current sensitivity of the galvanometer is

Question # 29

The voltage increases linearly with

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
2 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
3 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
4 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
5 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
6 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
7 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:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
8 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
9 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
10 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them

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