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

Question # 2

The most suitable material for permanent magnet is

Question # 3

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 # 4

NmA-1 is commonly called:

Question # 5

For the conversion of galvanometer into voltmeter, we connect a

Question # 6

The CRO is used for displaying the waveform of a given

Question # 7

A resistance used in galvanometer to make it voltmeter is called

Question # 8

F = I(L x B) is a

Question # 9

The current is measured in

Question # 10

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

Question # 11

How many number of anodes used in electron gun

Question # 12

The field around a moving charge is called

Question # 13

Lorentz force is defined as

Question # 14

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 # 15

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

Question # 16

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 # 17

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

Question # 18

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 19

Galvanometer is a device used for the detection of

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

To convert galvanometer into ammeter we connect

Question # 25

The SI unit of magnetic permeability is

Question # 26

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 27

A beam of electrons is provided by an

Question # 28

The magnetic field outside the solenoid due to current is

Question # 29

Tesla is the unit of

Question # 30

The sources of magnetic field are

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
2 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
3 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb
4 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)
5 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
6 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
7 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
8 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
9 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
10 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
A. F = B2
B. F = 0
C. F = B
D. F = B/2

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