The electric lines of force are?
imaginary
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physically existing everywhere
physically existing near the charges
depends upon case
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A hollow metallic sphere of 8cm diameter is charged with 4 x 10 8C. The potential on its surface will be?
A hollow metallic sphere of 8cm diameter is charged with 4 x 10 8C. The potential on its surface will be?
9000 volts
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900 volts
90 volts
zero
Potential difference is the work done in moving unit positive charge form one point to another?
Potential difference is the work done in moving unit positive charge form one point to another?
against the electric intensity
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in the direction of electric intensity
in any direction
in the direction of electric flux
The value of the capacitance depends upon the?
The value of the capacitance depends upon the?
geometry of the capacitor
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density of the capacitor plates
thickness of the capacitor plates
voltage applied
A 5 μF capacitor has a potential difference across its plates of 200 volts. The charge on the capacitor is?
A 5 μF capacitor has a potential difference across its plates of 200 volts. The charge on the capacitor is?
10-5 C
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2.5 x 10-8 C
103 C
4 x 103 C
Electric flux due to a point charge +q is?
Electric flux due to a point charge +q is?
q/ɛ0
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1/4IIɛ q/r
1/4IIɛ0. q/r2
4IIɛ0
Equivalent capacitance is greater than individual capacitances in?
Equivalent capacitance is greater than individual capacitances in?
parallel combination
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series combination
series and parallel combinations
None of the Option is Correct
The number of electrons in one coulomb charge is equal to?
The number of electrons in one coulomb charge is equal to?
6.2 x 1018
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1.6 x 1019
6.2 x 1021
1.6 x 10-27
SI unit of the permittivity of free space is?
SI unit of the permittivity of free space is?
N-1m-2C2
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NmC-1
N-1mC-2
Nm2C2
Value of εr for various dielectrics is always?
Value of εr for various dielectrics is always?
Larger than unit
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No hard and fast rule
Equal to the unit
Less than unity