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

Question # 2

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

Question # 3

The SI unit of magnetic permeability is

Question # 4

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 # 5

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 6

Electron gun consist of

Question # 7

Ammeter is used to measure

Question # 8

Weber is a unit of

Question # 9

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

Question # 10

The vector representation of force experience give the direction of

Question # 11

Resistance is measured in

Question # 12

The current sensitivity of the galvanometer is

Question # 13

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

Question # 14

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

Question # 15

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 # 16

The SI unit of magnetic flux is.

Question # 17

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

Question # 18

It is customary represent a current flowing towards the reader by a symbol

Question # 19

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

Question # 20

The SI unit of flux density is.

Question # 21

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 22

The direction of lines of force depends upon the direction of

Question # 23

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 24

Tesla is the unit of

Question # 25

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 26

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

Question # 27

The current is measured in

Question # 28

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

Question # 29

Strength of magnetic field is measured in SI units, in:

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is
A. minimum
B. maximum
C. zero
D. none of these
2

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
3 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
4 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N
5 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
6 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid
7 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
8 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
9 To convert galvanometer into ammeter we connect
A. small resistance in parallel with galvanometer
B. small resistance in series with galvanometer
C. high resistance in series with galvanometer
D. high resistance in parallel with galvanometer
10 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron

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