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Online Tests
ECAT Physics Chapter 12 Electrostatics Online Test MCQs With Answers
Question # 1
The resistivity of a substance depends upon the
Choose an answer
length
mass
area
temperature
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Question # 2
A current of 1.6 A is passed through a solution of CuSO
4. How many Cu
2+
ions are liberated in one minute?
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3 x 10
20
3 x 10
10
6 x 10
20
6 x 10
10
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Question # 3
A 100 W, 200 V bulb is connected to a 160 volts supply. The actual power consumption would be
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64 W
80 W
100 W
125 W
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Question # 4
Specific resistance of a wire depends upon
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Length
Cross-section area
Mass
None
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Question # 5
Some charge is being given to a conductor. Then its potential
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Is maximum at surface
Is maximum at centre
Is remain same throughout the conductor
Is maximum somewhere between surface and centre
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Question # 6
Ohm established a relation between
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voltage and resistance
voltage and charge
voltage and current
voltage resistance and charge
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Question # 7
Free electrons are
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tightly bound
fixed
loosely bound
tightly fixed
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Question # 8
The potential difference across each resistance in series combination is
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same
different
zero
none of these
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Question # 9
The powers of tow electric bulbs are 100 W and 200 W. Both of them are joined with 220 V mains. The ratio of resistances of their filaments will be
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1 : 2
2 : 1
1 : 4
4 : 1
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Question # 10
A conducting wire is drawn to double its length. Final resistivity of the material will be
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Double of the original one
Half of the original one
One fourth of the original one
Same as original one
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Question # 11
The electric flux is linked with a surface will be maximum when
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The surface is held parallel to the electric field
The surface is held perpendicular to the electric field
The surface makes an angle of 45
° with the electric field
All of the above
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Question # 12
The nature of capacity of electrostatic capacitor depends on
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Shape
Size
Thickness of plates
Area
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Question # 13
One coulomb of charge is created by
Choose an answer
10 electrons
1.6 x 10
-19
electrons
6.25 x 10
18
electrons
6.25 x 10
21
electrons
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Question # 14
Electron volt is the unit of
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Potential difference
Energy
Resistance
Capacitance
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