ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

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

Question # 2

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

Question # 3

The SI unit of flux density is

Question # 4

A charged particle moving at right angle to the magnetic field will experience

Question # 5

magnetic field is a:

Question # 6

A long wire wound tightly on a cylindrical core is called:

Question # 7

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

Question # 8

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

Question # 9

F = I(L x B) is a

Question # 10

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 11

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 # 12

Electron gun consist of

Question # 13

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

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
2 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
3 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
4 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
5 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
6 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
7

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
8 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
9 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
10 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum

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