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

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

Question # 2

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 # 3

It is customary represent a current flowing towards the reader by a symbol

Question # 4

Resistance is measured in

Question # 5

Magnetic lines of force:

Question # 6

Weber is a unit of

Question # 7

The most suitable material for permanent magnet is

Question # 8

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

Question # 9

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

Question # 10

Flurescent screen is a screen where visible spot

Question # 11

NmA-1 is commonly called:

Question # 12

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

Question # 13

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 14

The strength of magnetic field around the current conductor is

Question # 15

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

Question # 16

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 17

Tesla is the unit of

Question # 18

Lorentz force is defined as

Question # 19

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

Question # 20

A resistance used in galvanometer to make it voltmeter is called

Question # 21

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

Question # 22

The current is measured in

Question # 23

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 # 24

The unit of magnetic flux is

Question # 25

The SI unit of magnetic permeability is

Question # 26

To convert galvanometer into ammeter we connect

Question # 27

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

Question # 28

For the conversion of galvanometer into voltmeter, we connect a

Question # 29

magnetic field is a:

Question # 30

The magnetic field outside the solenoid due to current is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
2 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
3 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
4 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
5 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
6 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
7 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
8 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
9 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
10 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt

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