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

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

Question # 2

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

Question # 3

Which is modified form of galvanometer

Question # 4

The most suitable material for permanent magnet is

Question # 5

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 6

CRO deflects the beam of

Question # 7

A galvanometer is an instrument used to

Question # 8

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 9

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

Question # 10

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 11

The strength of magnetic field around the current conductor is

Question # 12

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 # 13

The current is measured in

Question # 14

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 15

The magnetic field outside the solenoid due to current is

Question # 16

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

Question # 17

To convert galvanometer into ammeter we connect

Question # 18

NmA-1 is commonly called:

Question # 19

Flurescent screen is a screen where visible spot

Question # 20

Tesla is the unit of

Question # 21

Resistance is measured in

Question # 22

Centripetal force for electron is given by

Question # 23

Magnetic flux and flux density are related by

Question # 24

The SI unit of flux density is.

Question # 25

In the region surrounding a current carrying wire:

Question # 26

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 # 27

Lorentz force is defined as

Question # 28

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

Question # 29

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

Question # 30

Avo-meter is used of measure the

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
3 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
4 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B
5 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
6 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
7 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
8 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
9 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
10 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1

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