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

magnetic field is a:

Question # 2

The voltage increases linearly with

Question # 3

A galvanometer is an instrument used to

Question # 4

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

Question # 5

The SI unit of flux density is.

Question # 6

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

Question # 7

The unit of flux density is also given by

Question # 8

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

Question # 9

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 # 10

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 # 11

The direction of lines of force depends upon the direction of

Question # 12

At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:

Question # 13

Flurescent screen is a screen where visible spot

Question # 14

In the region surrounding a current carrying wire:

Question # 15

The magnetic field outside the solenoid due to current is

Question # 16

A current carrying conductor sets up its own:

Question # 17

Lorentz force is defined as

Question # 18

CRO deflects the beam of

Question # 19

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

Question # 20

Which one of the following relations is correct?

Question # 21

Magnetic induction is also called as:

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

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 # 26

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

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

The galvanometer can be made sensitive if the value of the factor C/BAN is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
2 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
3 To convert galvanometer into ammeter we connect
A. small resistance in parallel with galvanometer
B. small resistance in series with galvanometer
C. high resistance in series with galvanometer
D. high resistance in parallel with galvanometer
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 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
6 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:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
7 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
8 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
9 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
10 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance

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