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

Question # 2

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

Question # 3

Avo-meter is used of measure the

Question # 4

Method "lamp and scale arrangement" used to measure the

Question # 5

Weber is a unit of

Question # 6

A resistance used in galvanometer to make it voltmeter is called

Question # 7

Flurescent screen is a screen where visible spot

Question # 8

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

Question # 9

Centripetal force for electron is given by

Question # 10

The current is measured in

Question # 11

The strength of magnetic field around the current conductor is

Question # 12

A beam of electrons is provided by an

Question # 13

NmA-1 is commonly called:

Question # 14

The pointer of a magnetic compass:

Question # 15

The magnetic field inside a solenoid can be increased by:

Question # 16

Magnetic lines of force:

Question # 17

The direction of lines of force depends upon the direction of

Question # 18

Magnetic induction is also called as:

Question # 19

A field is uniform and much stronger:

Question # 20

The unit of magnetic flux is

Question # 21

The gavanometer constant of a moving coil galvanometer is given by

Question # 22

A resistance used in voltmeter is called

Question # 23

Amperean path is a:

Question # 24

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

Question # 25

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 # 26

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

Question # 27

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

Question # 28

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 29

Resistance is measured in

Question # 30

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
2 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
3 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
4 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
5 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)
6 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
7 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
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
8 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
9 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
10 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)

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