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

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

Question # 2

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

Question # 3

The current is measured in

Question # 4

To convert galvanometer into ammeter we connect

Question # 5

A voltmeter is used to measure the

Question # 6

A current carrying conductor sets up its own:

Question # 7

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

Question # 8

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

Question # 9

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 10

The SI unit of magnetic induction is

Question # 11

Electron gun consist of

Question # 12

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 # 13

For the conversion of galvanometer into voltmeter, we connect a

Question # 14

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

Question # 15

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 16

Weber is a unit of

Question # 17

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

Question # 18

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 # 19

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

Question # 20

Magnetic induction is also called as:

Question # 21

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

Question # 22

A resistance used in galvanometer to make it voltmeter is called

Question # 23

The SI unit of magnetic permeability is

Question # 24

The gavanometer constant of a moving coil galvanometer is given by

Question # 25

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 26

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 # 27

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

Question # 28

A galvanometer is an instrument used to

Question # 29

The angle of deflection of coil can be measured by the

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
2 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
3 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
4 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
5 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
6

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

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic
7 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
A. 5N
B. 4N
C. 1.5N
D. 6N
8 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
9 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
10

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above

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