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

A resistance used in galvanometer to make it voltmeter is called

Question # 2

The magnetic field inside a solenoid can be increased by:

Question # 3

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 # 4

Current is measured in

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 9

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

Question # 10

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 11

A current carrying conductor sets up its own:

Question # 12

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

Question # 13

Galvanometer is a device used for the detection of

Question # 14

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

Question # 15

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

Question # 16

A galvanometer is an instrument used to

Question # 17

Avo-meter is used of measure the

Question # 18

F = I(L x B) is a

Question # 19

The unit of magnetic flux is

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

In a moving coil galvanometer, the deflecting couple depends upon

Question # 24

Weber is a unit of

Question # 25

The SI unit of magnetic permeability is

Question # 26

The SI unit of magnetic flux is.

Question # 27

The gavanometer constant of a moving coil galvanometer is given by

Question # 28

A field is uniform and much stronger:

Question # 29

The current is measured in

Question # 30

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
2 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
3 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
4 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
5 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
6 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
7 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
8 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)
9 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these
10 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero

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