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

Question # 2

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

Question # 3

A galvanometer is an instrument used to

Question # 4

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

Question # 5

Magnetic lines of force:

Question # 6

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 7

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

Question # 8

The SI unit of magnetic induction is

Question # 9

The unit of magnetic flux is

Question # 10

Electron gun consist of

Question # 11

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

Question # 12

The current is measured in

Question # 13

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

Question # 14

To convert galvanometer into ammeter we connect

Question # 15

The pointer of a magnetic compass:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
2 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
3 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
4 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
5 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
6 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
7 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
8

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
9 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
10 The strength of magnetic field around the current conductor is
A. Smaller near the conductor
B. Greater near the conductor
C. Greater at the large distance from the conductor
D. Constant near and away from the conductor

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