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

To convert galvanometer into ammeter we connect

Question # 2

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 3

How many number of anodes used in electron gun

Question # 4

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

Question # 5

Ammeter is used to measure

Question # 6

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

Question # 7

A resistance used in voltmeter is called

Question # 8

A field is uniform and much stronger:

Question # 9

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

Question # 10

Tesla is the unit of

Question # 11

magnetic field is a:

Question # 12

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

Question # 13

A galvanometer is an instrument used to

Question # 14

The unit of flux density is also given by

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
2 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
3 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these
4 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
5 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
6 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
7 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
8

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
9 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
10 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c

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