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ECAT Physics Chapter 14 Electromagnetism Online Test MCQs With Answers
Question # 1
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
Choose an answer
dead beat galvanometer
stable galvanometer
shunt galvanometer
sensitive galvanomter
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Question # 2
The CRO deflects the beam of electrons, when they passes through uniform
Choose an answer
electric field
gravitational field
magnetic flax
magnetic field
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Question # 3
If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are
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n/AL
Al/n
nAL
nA/L
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Question # 4
Amperean path is a:
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Closed path
Rectangular path
Circular path
Any of above
Broken path
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Question # 5
Strength of magnetic field is measured in SI units, in:
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N
N/Am
Am/N
Nm/A
None of these
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Question # 6
Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
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Maximum
Minimum
Zero
Very small
None of these
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Question # 7
Resistance is measured in
Choose an answer
volts
ampere
ohm
watt
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Question # 8
The force experienced by charged particle is maximum, if it moves
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parallel to magnetic field
perpendicular to magnetic field
opposite to the magnetic field
none of these
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Question # 9
The SI unit of magnetic flux is
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NmA
-2
NmA
-1
NAm
-1
Nm
2
A
-1
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Question # 10
41 The force experience, when proton projected in a magnetic field with velocity 'v' is
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+e(v x B)
-C(V x B)
+e
2
(v x B)
-e(v
2
x B)
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Question # 11
The force acting on a charge moving in a magnetic field
Choose an answer
is perpendicular to the both magnetic field and direction of motion
is proportional to the magnetic of charges
vanishes when the motion is directly opposite to the direction of field
all of the above
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Question # 12
Weber is a unit of
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magnetic flux
magnetic filed intensity
magnetic induction
magnetic flux density
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