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

In the region surrounding a current carrying wire:

Question # 2

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

Question # 3

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 4

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 5

A current carrying conductor sets up its own:

Question # 6

A beam of electrons is provided by an

Question # 7

The force acting on a charge moving in a magnetic field

Question # 8

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

Question # 9

Centripetal force for electron is given by

Question # 10

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

Question # 11

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

Question # 12

The magnetic field inside a solenoid can be increased by:

Question # 13

Resistance is measured in

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

Tesla is the unit of

Question # 20

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

Question # 21

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 22

The SI unit of flux density is

Question # 23

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

Question # 24

The unit of magnetic flux is

Question # 25

The force experienced by charged particle is maximum, if it moves

Question # 26

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 27

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 # 28

Amperean path is a:

Question # 29

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

Question # 30

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

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ECAT Class Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
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 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
4 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
5 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
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 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
8 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
9 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
10 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A

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