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 angle of deflection of coil can be measured by the

Question # 2

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

Question # 3

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

Question # 4

F = I(L x B) is a

Question # 5

The SI unit of magnetic induction is

Question # 6

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

Question # 7

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

Question # 8

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 9

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

Question # 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

Question # 11

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 12

The sources of magnetic field are

Question # 13

The torque per unit twist of coil is called

Question # 14

The strength of magnetic field around the current conductor is

Question # 15

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 # 16

magnetic field is a:

Question # 17

A solenoid is a coil of wire which is:

Question # 18

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

Question # 19

Centripetal force for electron is given by

Question # 20

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

Question # 21

The SI unit of magnetic flux is

Question # 22

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

Question # 23

The current is measured in

Question # 24

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 25

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

Question # 26

A beam of electrons is provided by an

Question # 27

A resistance used in voltmeter is called

Question # 28

The SI unit of flux density is.

Question # 29

Galvanometer is a device used for the detection of

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
3 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
4 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
5 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
6 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
7 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
8 The SI unit of magnetic flux is.
A. weber
B. Nm-1A-1
C. tesla
D. gauss
9 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
10 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical

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