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

Tesla is the unit of

Question # 2

In a moving coil galvanometer, the deflecting couple depends upon

Question # 3

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 4

The sources of magnetic field are

Question # 5

magnetic field is a:

Question # 6

Magnetic induction is also called as:

Question # 7

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 8

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

Question # 9

Electron gun consist of

Question # 10

The torque per unit twist of coil is called

Question # 11

The SI unit of magnetic permeability is

Question # 12

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

Question # 13

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

Question # 14

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 15

A long wire wound tightly on a cylindrical core is called:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
4 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
5 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N
6 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
7 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
8 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
A. F = B2
B. F = 0
C. F = B
D. F = B/2
9 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
10 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber

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