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

Question # 2

The vector representation of force experience give the direction of

Question # 3

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 4

For the conversion of galvanometer into voltmeter, we connect a

Question # 5

The unit of magnetic flux is

Question # 6

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

Question # 7

A beam of electrons is provided by an

Question # 8

The voltage increases linearly with

Question # 9

magnetic field is a:

Question # 10

A current carrying conductor sets up its own:

Question # 11

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

Question # 12

Avo-meter is used of measure the

Question # 13

The magnetic field in the middle of a solenoid due to current is

Question # 14

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

Question # 15

Resistance is measured in

Question # 16

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

Question # 17

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 18

The permeability of free space is measured in:

Question # 19

A galvanometer is an instrument used to

Question # 20

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 21

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 22

Flurescent screen is a screen where visible spot

Question # 23

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 24

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 # 25

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 26

The SI unit of flux density is

Question # 27

Magnetic induction is also called as:

Question # 28

The pointer of a magnetic compass:

Question # 29

A resistance used in galvanometer to make it voltmeter is called

Question # 30

Charge to mass ratio (e/m) of an electron is given by the relation

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
2 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
3 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
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 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
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
6 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
7 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
8 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
9 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
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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter

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