ECAT Pre Engineering Physics Chapter 14 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 14 Electromagnetism

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 14 Electromagnetism

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Physics ECAT Pre Engineering Chapter 14 Electromagnetism

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Question # 1

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

Question # 2

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

Question # 3

The SI unit of magnetic permeability is

Question # 4

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

Question # 5

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 # 6

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

Question # 7

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

Question # 8

The SI unit of flux density is.

Question # 9

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

Question # 10

A galvanometer is an instrument used to

Question # 11

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

Question # 12

A solenoid is a coil of wire which is:

Question # 13

F = I(L x B) is a

Question # 14

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

Question # 15

In the region surrounding a current carrying wire:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
2 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
3 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
4 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
5 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
6

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
7 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
8 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
9 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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
10 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these

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