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 CRO is used for displaying the waveform of a given

Question # 2

The SI unit of flux density is.

Question # 3

A resistance used in galvanometer to make it voltmeter is called

Question # 4

A field is uniform and much stronger:

Question # 5

Tesla is the unit of

Question # 6

Weber is a unit of

Question # 7

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

Question # 8

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 9

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

Question # 10

The SI unit of magnetic flux is

Question # 11

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

Question # 12

The unit of magnetic flux is

Question # 13

The SI unit of magnetic permeability is

Question # 14

A voltmeter is used to measure the

Question # 15

Current is measured in

Question # 16

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

Question # 17

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

Question # 18

NmA-1 is commonly called:

Question # 19

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

Question # 20

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 21

Which one of the following relations is correct?

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

Galvanometer is a device used for the detection of

Question # 26

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

Question # 27

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 # 28

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

Question # 29

Method "lamp and scale arrangement" used to measure the

Question # 30

Avo-meter is used of measure the

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
A. 5N
B. 4N
C. 1.5N
D. 6N
2 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
3 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
4 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
5 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
6 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
7 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
8 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
9 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
10 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)

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