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

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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

Resistance is measured in

Question # 6

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

Question # 7

In the region surrounding a current carrying wire:

Question # 8

How many number of anodes used in electron gun

Question # 9

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 # 10

The current is measured in

Question # 11

Centripetal force for electron is given by

Question # 12

Galvanometer is a device used for the detection of

Question # 13

The sources of magnetic field are

Question # 14

The magnetic field inside a solenoid can be increased by:

Question # 15

Tesla is the unit of

Question # 16

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

In the expression of force experienced by electron, the direction of both v and B are

Question # 21

The SI unit of magnetic permeability is

Question # 22

The SI unit of magnetic flux is

Question # 23

The CRO is used for displaying the waveform of a given

Question # 24

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 25

A long wire wound tightly on a cylindrical core is called:

Question # 26

The force acting on a charge moving in a magnetic field

Question # 27

Avo-meter is used of measure the

Question # 28

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 # 29

The strength of magnetic field around the current conductor is

Question # 30

The current sensitivity of the galvanometer is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
2 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
3 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
4 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
5 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
6 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
7 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
8 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
9 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
10 Current is measured in
A. volts
B. watt
C. ohm
D. ampere

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