Q. A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is 0.024 F 0.12 F 0.6 F 0.8 F Answer: 0.024 F

Q. If the sheet of a bakelite is inserted between the plates of an air capacitor, the capacitance will decrease increase remains unchanged become zero Answer: increase

Q. The ability of charged bodies to exert force on 6ne another is attributed to the existence of electrons protons neutrons electric field Answer: electric field

Q. An electrolytic capacitor can be used for D.C. only AC. only both D.C. as well as A.C. Answer: D.C. only

Q. In electrostatic air cleaner, air mixed with dust and pollen enters device across positively charged mesh negatively charged mesh neutral mesh dual charged mesh Answer: positively charged mesh

Q. If a charged rod is brought closer to a gas filled balloon then Radius decreases Balloon bursts Radius increase Balloon squeezes Answer: Radius increase

Q. Coulomb’s force between 2 point charges 10µC and 5µC placed at a distance of 150cm is 0.2 N 0.5 N 2 N 10 N Answer: 0.2 N

Q. Ability of capacitor to store charge depends upon area of plates distance between plates type of dielectric used all of above Answer: all of above

Q. In combination of capacitors in series, capacitors are connected parallel side by side up and down none of the above Answer: side by side

Q. Coulomb’s law is only true for point charges whose sizes are medium very large very small none of the above Answer: very small