ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 2

The gavanometer constant of a moving coil galvanometer is given by

Question # 3

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

Question # 4

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Question # 5

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

Question # 6

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

Question # 7

The magnetic field outside the solenoid due to current is

Question # 8

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 9

Resistance is measured in

Question # 10

Method "lamp and scale arrangement" used to measure the

Question # 11

Magnetic flux and flux density are related by

Question # 12

A voltmeter is used to measure the

Question # 13

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 14

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

Question # 15

The SI unit of magnetic induction is tesla which is equal to

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
2 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)
3 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
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 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum
6 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
7 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
8 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
9 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
10 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN

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