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

Which one of the following relations is correct?

Question # 2

F = I(L x B) is a

Question # 3

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 # 4

Resistance is measured in

Question # 5

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

Question # 6

A galvanometer is an instrument used to

Question # 7

The magnetic field inside a solenoid can be increased by:

Question # 8

Method "lamp and scale arrangement" used to measure the

Question # 9

Flurescent screen is a screen where visible spot

Question # 10

The voltage increases linearly with

Question # 11

The sources of magnetic field are

Question # 12

The CRO is used for displaying the waveform of a given

Question # 13

A current carrying conductor sets up its own:

Question # 14

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 15

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

Question # 16

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 17

Which is modified form of galvanometer

Question # 18

A charged particle moving at right angle to the magnetic field will experience

Question # 19

magnetic field is a:

Question # 20

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 21

The unit of magnetic flux is

Question # 22

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

Question # 23

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

Question # 24

Magnetic lines of force:

Question # 25

The vector representation of force experience give the direction of

Question # 26

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 # 27

The SI unit of magnetic permeability is

Question # 28

A resistance used in galvanometer to make it voltmeter is called

Question # 29

In the region surrounding a current carrying wire:

Question # 30

The strength of magnetic field around the current conductor is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
2 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
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 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
5 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
6 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
7 If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
8 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
9 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
10 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these

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