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 unit of magnetic flux is

Question # 2

The CRO is used for displaying the waveform of a given

Question # 3

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 4

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

Question # 5

Ammeter is used to measure

Question # 6

A current carrying conductor sets up its own:

Question # 7

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

Question # 8

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

Question # 9

Lorentz force is defined as

Question # 10

Amperean path is a:

Question # 11

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

Question # 12

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 # 13

In the region surrounding a current carrying wire:

Question # 14

The strength of magnetic field around the current conductor is

Question # 15

In a moving coil galvanometer, the deflecting couple depends upon

Question # 16

The CRO deflects the beam of electrons, when they passes through uniform

Question # 17

Which is modified form of galvanometer

Question # 18

The SI unit of flux density is

Question # 19

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

Question # 20

Resistance is measured in

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

A resistance used in voltmeter is called

Question # 25

Method "lamp and scale arrangement" used to measure the

Question # 26

Magnetic lines of force:

Question # 27

The sources of magnetic field are

Question # 28

Centripetal force for electron is given by

Question # 29

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 30

A resistance used in galvanometer to make it voltmeter is called

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
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
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
2 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
3 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
4 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
5 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
6 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
7 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
8 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
9 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
10 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

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