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

Weber is a unit of

Question # 3

Electron gun consist of

Question # 4

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

Question # 5

A solenoid is a coil of wire which is:

Question # 6

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

Question # 7

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 8

Magnetic flux and flux density are related by

Question # 9

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

Question # 10

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

Question # 11

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

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

Resistance is measured in

Question # 14

The SI unit of flux density is.

Question # 15

A resistance used in voltmeter is called

Question # 16

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

Question # 17

A beam of electrons is provided by an

Question # 18

The permeability of free space is measured in:

Question # 19

The voltage increases linearly with

Question # 20

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 21

Flurescent screen is a screen where visible spot

Question # 22

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 23

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

Question # 24

The pointer of a magnetic compass:

Question # 25

The SI unit of magnetic flux is.

Question # 26

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 27

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 28

In a moving coil galvanometer, the deflecting couple depends upon

Question # 29

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

Question # 30

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

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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 gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
3 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
4 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
5 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
6 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
7 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
8 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
9 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid
10 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant

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