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

NmA-1 is commonly called:

Question # 2

The current is measured in

Question # 3

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 4

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

Question # 5

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

Question # 6

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 7

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 # 8

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

Question # 9

The SI unit of flux density is

Question # 10

A resistance used in voltmeter is called

Question # 11

Magnetic flux and flux density are related by

Question # 12

For the conversion of galvanometer into voltmeter, we connect a

Question # 13

The permeability of free space is measured in:

Question # 14

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

Question # 15

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

Question # 16

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:

Question # 17

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

Question # 18

A beam of electrons is provided by an

Question # 19

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 # 20

To convert galvanometer into ammeter we connect

Question # 21

Tesla is the unit of

Question # 22

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

Question # 23

The sources of magnetic field are

Question # 24

The CRO is used for displaying the waveform of a given

Question # 25

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

Question # 26

In a moving coil galvanometer, the deflecting couple depends upon

Question # 27

The voltage increases linearly with

Question # 28

The unit of magnetic flux is

Question # 29

The most suitable material for permanent magnet is

Question # 30

Magnetic induction is also called as:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
2 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
3 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
4 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
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
5 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
6 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
7 For the conversion of galvanometer into voltmeter, we connect a
A. small resistance in series with galvanometer
B. small resistance in parallel with galvanometer
C. high resistance in parallel with galvanometer
D. high resistance series with galvanometer
8 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
9

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
10 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

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