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

Question # 2

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

Question # 3

The strength of magnetic field around the current conductor is

Question # 4

The pointer of a magnetic compass:

Question # 5

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

Question # 6

Method "lamp and scale arrangement" used to measure the

Question # 7

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 8

The CRO is used for displaying the waveform of a given

Question # 9

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

Question # 10

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

Question # 11

A resistance used in voltmeter is called

Question # 12

Which one of the following relations is correct?

Question # 13

Lorentz force is defined as

Question # 14

To convert galvanometer into ammeter we connect

Question # 15

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

Question # 16

The vector representation of force experience give the direction of

Question # 17

Avo-meter is used of measure the

Question # 18

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

Question # 19

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

Question # 20

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 # 21

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 22

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

Question # 23

In the formula B= µ̻ nl, the symbol n denotes:

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

The torque per unit twist of coil is called

Question # 29

The unit of magnetic flux is

Question # 30

Resistance is measured in

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
2 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
3 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
4 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
5 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
6 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
7 Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
A. Maximum
B. Minimum
C. Zero
D. Very small
8 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
9 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
10 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter

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