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

The SI unit of magnetic flux is.

Question # 2

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

Question # 3

The force acting on a charge moving in a magnetic field

Question # 4

The force experienced by charged particle is maximum, if it moves

Question # 5

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 6

The angle of deflection of coil can be measured by the

Question # 7

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

Question # 8

The sources of magnetic field are

Question # 9

The torque per unit twist of coil is called

Question # 10

CRO deflects the beam of

Question # 11

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

Question # 12

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

Question # 13

How many number of anodes used in electron gun

Question # 14

The pointer of a magnetic compass:

Question # 15

The strength of magnetic field around the current conductor is

Question # 16

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

Question # 17

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

Question # 18

Magnetic induction is also called as:

Question # 19

The SI unit of flux density is

Question # 20

A beam of electrons is provided by an

Question # 21

The magnetic field outside the solenoid due to current is

Question # 22

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

Question # 23

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 24

Ammeter is used to measure

Question # 25

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

Question # 26

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

Question # 27

A solenoid is a coil of wire which is:

Question # 28

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

Question # 29

To convert galvanometer into ammeter we connect

Question # 30

Lorentz force is defined as

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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 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
3 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
4 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
5 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
6 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
7 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb
8 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
9 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
10 The strength of magnetic field around the current conductor is
A. Smaller near the conductor
B. Greater near the conductor
C. Greater at the large distance from the conductor
D. Constant near and away from the conductor

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