Q. Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ? 50100150200 Answer: 100

Q. The electric field at a point situated at a distance d from straight charged conductor is proportional to dinversely proportional to dinversely proportional to dnone of the above Answer: inversely proportional to d

Q. A field line and an equipotential surface are always parallelalways at 90°inclined at any angle 0none of the above Answer: always at 90°

Q. The electric field intensity at a point situated 4 meters from a point charge is 200 N/C. If the distance is reduced to 2 meters, the field intensity will be 400 N/C600 N/C800 N/C1200 N/C Answer: 800 N/C

Q. A dielectric material must be resistorinsulatorgood conductorsemi conductor Answer: insulator

Q. If three 10 uF capacitors are connected in parallel, the net cararitance is 20 uF30 uE40 uF50 uF Answer: 30 uE

Q. The direction of electric field due +0 positive charge is . away from the chargetowards the chargeboth A. and B.none of the above Answer: away from the charge

Q. If three 15 uF capacitors are connected in series, the net capacitance is 5 uF30 uF45 uF50 uF Answer: 5 uF

Q. For making a capacitor, it is better to select a dielectric having low permittivityhigh permittivitypermittivity same as that of airpermittivity slightly more than that of air Answer: high permittivity

Q. A capacitor stores 0.24 coulombs at 10 volts. Its capacitance is 0.024 F0.12 F0.6 F0.8 F Answer: 0.024 F

Q. If the sheet of a bakelite is inserted between the plates of an air capacitor, the capacitance will decreaseincreaseremains unchangedbecome zero Answer: increase

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