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

Question # 2

Which is modified form of galvanometer

Question # 3

The force experienced by charged particle is maximum, if it moves

Question # 4

The magnetic field outside the solenoid due to current is

Question # 5

A resistance used in galvanometer to make it voltmeter is called

Question # 6

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

Question # 7

Magnetic lines of force:

Question # 8

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 9

NmA-1 is commonly called:

Question # 10

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

Question # 11

To convert galvanometer into ammeter we connect

Question # 12

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

Question # 13

Resistance is measured in

Question # 14

For the conversion of galvanometer into voltmeter, we connect a

Question # 15

Electron gun consist of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
2 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
3 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
4 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
5 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)
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 galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
8 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°
9 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
10 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid

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