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

A current carrying conductor sets up its own:

Question # 2

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

Question # 3

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 4

The magnetic field inside a solenoid can be increased by:

Question # 5

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 # 6

Resistance is measured in

Question # 7

The vector representation of force experience give the direction of

Question # 8

The SI unit of magnetic induction is tesla which is equal to

Question # 9

The unit of flux density is also given by

Question # 10

Lorentz force is defined as

Question # 11

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

Question # 12

The field around a moving charge is called

Question # 13

To convert galvanometer into ammeter we connect

Question # 14

The permeability of free space is measured in:

Question # 15

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 16

The force acting on a charge moving in a magnetic field

Question # 17

Current is measured in

Question # 18

How many number of anodes used in electron gun

Question # 19

The most suitable material for permanent magnet is

Question # 20

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 21

A solenoid is a coil of wire which is:

Question # 22

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 # 23

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

Question # 24

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 25

Tesla is the unit of

Question # 26

Centripetal force for electron is given by

Question # 27

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

Question # 28

Amperean path is a:

Question # 29

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 # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
2 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
3 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
4 A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
5 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
6 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)
7 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B
8 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
9 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
10 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these

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