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

magnetic field is a:

Question # 2

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 3

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

Question # 4

Magnetic flux and flux density are related by

Question # 5

The sources of magnetic field are

Question # 6

The SI unit of magnetic flux is.

Question # 7

The current sensitivity of the galvanometer is

Question # 8

The permeability of free space is measured in:

Question # 9

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 10

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

Question # 11

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

Question # 12

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 13

In the expression of force experienced by electron, the direction of both v and B are

Question # 14

The most suitable material for permanent magnet is

Question # 15

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

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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 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
3 If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are
A. n/AL
B. Al/n
C. nAL
D. nA/L
4 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
5 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
6 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
7 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
8 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
9 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
10 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero

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