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

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 3

Avo-meter is used of measure the

Question # 4

The field around a moving charge is called

Question # 5

CRO deflects the beam of

Question # 6

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

Question # 7

The magnetic field inside a solenoid can be increased by:

Question # 8

Current is measured in

Question # 9

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

Question # 10

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

Question # 11

The unit of magnetic flux is

Question # 12

A current carrying conductor sets up its own:

Question # 13

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

Question # 14

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 15

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

Question # 16

Weber is a unit of

Question # 17

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 # 18

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

Question # 19

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

Question # 20

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

Question # 21

Resistance is measured in

Question # 22

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

Question # 23

Magnetic flux and flux density are related by

Question # 24

A field is uniform and much stronger:

Question # 25

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

Question # 26

Ammeter is used to measure

Question # 27

Lorentz force is defined as

Question # 28

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

Question # 29

The vector representation of force experience give the direction of

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
3 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
4 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
5 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
6 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
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 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
9 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
10 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)

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