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A. Less than unity
B. Equal to the unit
C. Larger than unit
D. No hard and fast rule
Answer
Answer
C. Larger than unit
Submitted by: Rasool Bux
SI unit of the permittivity of free space is?
A. Nm2C2
B. N-1mC-2
C. NmC-1
D. N-1m-2C2
Answer
Answer
D. N-1m-2C2
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The number of electrons in one coulomb charge is equal to?
A. 6.2 x 1018
B. 1.6 x 1019
C. 6.2 x 1021
D. 1.6 x 10-27
Answer
Answer
A. 6.2 x 1018
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Equivalent capacitance is greater than individual capacitances in?
A. series combination
B. parallel combination
C. both series and parallel combinations
D. none of above
Answer
Answer
B. parallel combination
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A 5 μF capacitor has a potential difference across its plates of 200 volts. The charge on the capacitor is?
A. 2.5 x 10-8 C
B. 10-5 C
C. 103 C
D. 4 x 103 C
Answer
Answer
B. 10-5 C
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The value of the capacitance depends upon the?
A. voltage applied
B. thickness of the capacitor plates
C. geometry of the capacitor
D. density of the capacitor plates
Answer
Answer
C. geometry of the capacitor
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Potential difference is the work done in moving unit positive charge form one point to another?
A. in the direction of electric intensity
B. against the electric intensity
C. in any direction
D. in the direction of electric flux
Answer
Answer
B. against electric intensity
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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. 900 volts
B. 9000 volts
C. 90 volts
D. zero
Answer
Answer
B. 9000 volts
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The electric lines of force are?
A. imaginary
B. physically existing everywhere
C. physically existing near the charges
D. depends upon case
Answer
Answer
A. imaginary
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An electric field can deflect?
A. Neutrons
B. X-rays
C. Both glass rod and silk acquire a negative charge
D. None
Answer
Answer
D. None
Submitted by: Rasool Bux