ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

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ECAT Pre General Science 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 the formula B= µ̻ nl, the symbol n denotes:

Question # 3

Current is measured in

Question # 4

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 5

The magnetic field in the middle of a solenoid due to current is

Question # 6

To convert galvanometer into ammeter we connect

Question # 7

Magnetic flux and flux density are related by

Question # 8

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

Question # 9

Magnetic lines of force:

Question # 10

The direction of lines of force depends upon the direction of

Question # 11

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

Question # 12

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 # 13

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

Question # 14

The field around a moving charge is called

Question # 15

When current passes through a solenoid coil, it behaves like a

Question # 16

The unit of magnetic flux is

Question # 17

The sources of magnetic field are

Question # 18

Avo-meter is used of measure the

Question # 19

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 20

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 21

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 22

The SI unit of flux density is

Question # 23

Centripetal force for electron is given by

Question # 24

The strength of magnetic field around the current conductor is

Question # 25

A solenoid is a coil of wire which is:

Question # 26

Ammeter is used to measure

Question # 27

The permeability of free space is measured in:

Question # 28

The SI unit of magnetic flux is

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
2 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
3 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
4 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
5 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
6 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
7 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
8 The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the
A. magnetic flux
B. magnetic induction
C. magnetic field
D. self inductance
9 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
10 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb

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