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

Centripetal force for electron is given by

Question # 2

The magnetic field outside the solenoid due to current is

Question # 3

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

Question # 4

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

Question # 5

Lorentz force is defined as

Question # 6

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

Question # 7

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

Question # 8

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 9

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

Question # 10

Weber is a unit of

Question # 11

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

Question # 12

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:

Question # 13

Ammeter is used to measure

Question # 14

if the field is directed along the normal to the area, then flux is:

Question # 15

Which one of the following relations is correct?

Question # 16

The magnetic field inside a solenoid can be increased by:

Question # 17

Flurescent screen is a screen where visible spot

Question # 18

Resistance is measured in

Question # 19

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 # 20

Tesla is the unit of

Question # 21

Method "lamp and scale arrangement" used to measure the

Question # 22

A resistance used in voltmeter is called

Question # 23

The current sensitivity of the galvanometer is

Question # 24

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 25

The SI unit of flux density is

Question # 26

The permeability of free space is measured in:

Question # 27

Avo-meter is used of measure the

Question # 28

To convert galvanometer into ammeter we connect

Question # 29

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

Question # 30

A resistance used in galvanometer to make it voltmeter is called

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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 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
3 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
4 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
5 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
6 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
7 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
A. F = B2
B. F = 0
C. F = B
D. F = B/2
8 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
9 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
A. n/AL
B. Al/n
C. nAL
D. nA/L
10 A current carrying conductor sets up its own:
A.

Electric field

B.

Nuclear field

C.

Magnetic field

D.

Both (A) and (C)

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