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

Question # 2

Magnetic lines of force:

Question # 3

The SI unit of flux density is

Question # 4

The pointer of a magnetic compass:

Question # 5

Which is modified form of galvanometer

Question # 6

A galvanometer is an instrument used to

Question # 7

In the region surrounding a current carrying wire:

Question # 8

F = I(L x B) is a

Question # 9

The force acting on a charge moving in a magnetic field

Question # 10

The SI unit of magnetic flux is

Question # 11

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

Question # 12

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

Question # 13

The strength of magnetic field around the current conductor is

Question # 14

NmA-1 is commonly called:

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
2 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
3 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
4 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
5 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
6 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
7 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
8 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
9 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
10 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2

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