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 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 # 2

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

Question # 3

A solenoid is a coil of wire which is:

Question # 4

Current is measured in

Question # 5

In a moving coil galvanometer, the deflecting couple depends upon

Question # 6

The direction of lines of force depends upon the direction of

Question # 7

The gavanometer constant of a moving coil galvanometer is given by

Question # 8

The strength of magnetic field around the current conductor is

Question # 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

Question # 10

The magnetic field inside a solenoid can be increased by:

Question # 11

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

Question # 12

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

Question # 13

To convert galvanometer into ammeter we connect

Question # 14

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 # 15

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

Question # 16

The unit of magnetic flux is

Question # 17

The vector representation of force experience give the direction of

Question # 18

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 19

Lorentz force is defined as

Question # 20

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

Question # 21

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

Question # 22

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 23

When current passes through a solenoid coil, it behaves like a

Question # 24

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

Question # 25

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

Question # 26

For the conversion of galvanometer into voltmeter, we connect a

Question # 27

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 28

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 29

A beam of electrons is provided by an

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
2 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
3 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
4 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
5 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
6 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
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
7 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
8 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
9 At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:
A. -y direction
B. +y direction
C. +z direction
D. -z direction
10 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these

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