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

NmA-1 is commonly called:

Question # 2

Magnetic flux and flux density are related by

Question # 3

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

Question # 4

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

Question # 5

The strength of magnetic field around the current conductor is

Question # 6

The field around a moving charge is called

Question # 7

The magnetic field outside the solenoid due to current is

Question # 8

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

Question # 9

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

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

The vector representation of force experience give the direction of

Question # 13

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

Question # 14

Lorentz force is defined as

Question # 15

The SI unit of flux density is

Question # 16

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

Question # 17

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

Question # 18

For the conversion of galvanometer into voltmeter, we connect a

Question # 19

A resistance used in galvanometer to make it voltmeter is called

Question # 20

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 21

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 # 22

Centripetal force for electron is given by

Question # 23

The force acting on a charge moving in a magnetic field

Question # 24

A charged particle moving at right angle to the magnetic field will experience

Question # 25

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

Question # 26

A resistance used in voltmeter is called

Question # 27

A field is uniform and much stronger:

Question # 28

The SI unit of flux density is.

Question # 29

Magnetic induction is also called as:

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
2 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
3 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
4 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
5 '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
6 A shunt resistance parallel to the galvanometer is used to convert it into
A. avometer
B. millimeter
C. voltmeter
D. none of these
7 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
8 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
9 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
10 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

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