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A. V/A
B. J/V
C. V/m
D. A/m
Answer
C. V/m
Submitted by: Rasool Bux
Photocopier and inject printer are dealt in?
A. Electrostatics
B. Charges in motion
C. Capacitors
D. Electric fields
Answer
A. Electrostatics
Submitted by: Rasool Bux
If a charged rod is brought closer to a gas filled balloon then?
A. Radius decreases
B. Balloon bursts
C. Radius increase
D. Balloon squeezes
Answer
C. Radius increase
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Value of εr for various dielectrics is always?
A. Less than unity
B. Equal to the unit
C. Larger than unit
D. No hard and fast rule
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
D. N-1m-2C2
Submitted by: Rasool Bux
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
A. 6.2 x 1018
Submitted by: Rasool Bux
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
B. parallel combination
Submitted by: Rasool Bux
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
B. 10-5 C
Submitted by: Rasool Bux
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
C. geometry of the capacitor
Submitted by: Rasool Bux
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
B. against electric intensity
Submitted by: Rasool Bux