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
Electrostatics
Equivalent capacitance is greater than individual capacitances in_____________?
Equivalent capacitance is greater than individual capacitances in_____________?
A. series combination
B. parallel combination
C. both series and parallel combinations
D. none of above
The number of electrons in one coulomb charge is equal to_______________?
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
SI unit of the permittivity of free space is________________?
SI unit of the permittivity of free space is________________?
A. Nm2C2
B. N-1mC-2
C. NmC-1
D. N-1m-2C2
Value of εr for various dielectrics is always________________?
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
Which one of the following can be taken as the measure of electric intensity ?
Which one of the following can be taken as the measure of electric intensity ?
A. F/A
B. V/A
C. VF/A
D. q/VA
Electric flux due to a point charge +q is______________?
Electric flux due to a point charge +q is______________?
A. 1/4IIɛ q/r
B. q/ɛ0
C. 1/4IIɛ0. q/r2
D. 4IIɛ0
N/C =_____________?
N/C =_____________?
A. V/A
B. J/V
C. V/m
D. A/m
Photocopier and inject printer are dealt in________________?
Photocopier and inject printer are dealt in________________?
A. Electrostatics
B. Charges in motion
C. Capacitors
D. Electric fields
If a charged rod is brought closer to a gas filled balloon then______________?
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