ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 2

F = I(L x B) is a

Question # 3

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

Question # 4

Electron gun consist of

Question # 5

The SI unit of magnetic induction is tesla which is equal to

Question # 6

How many number of anodes used in electron gun

Question # 7

To convert galvanometer into ammeter we connect

Question # 8

Amperean path is a:

Question # 9

A solenoid is a coil of wire which is:

Question # 10

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

Question # 11

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 12

Lorentz force is defined as

Question # 13

Magnetic induction is also called as:

Question # 14

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 # 15

Ammeter is used to measure

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
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 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
4 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
5 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum
6 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
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
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
8 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
9 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
10 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them

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