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

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

Question # 2

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

Question # 3

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

Question # 4

Lorentz force is defined as

Question # 5

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

Question # 6

The pointer of a magnetic compass:

Question # 7

The unit of magnetic flux is

Question # 8

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

Question # 9

Strength of magnetic field is measured in SI units, in:

Question # 10

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

Question # 11

A resistance used in voltmeter is called

Question # 12

The SI unit of magnetic flux is.

Question # 13

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

Question # 14

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

Question # 15

Resistance is measured in

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
2 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
3 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
A. 5N
B. 4N
C. 1.5N
D. 6N
4 The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
5 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
6 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
7 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
8 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
9 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
10

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

Circular and endless

B.

Oval in shape and endless

C.

Straight

D.

Parabolic

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