Q. Ability of capacitor to store charge depends upon area of platesdistance between platestype of dielectric usedall of above Answer: all of above

Q. In combination of capacitors in series, capacitors are connected parallelside by sideup and downnone of the above Answer: side by side

Q. Coulomb's law is only true for point charges whose sizes are mediumvery largevery smallnone of the above Answer: very small

Q. If metallic conductor is charged negatively then its weight Remains sameFirst increases then decreasesDecreases then increasesIncreases for a while Answer: Increases for a while

Q. Photocopier and inject printer are dealt in ElectrostaticsCharges in motionCapacitorsElectric fields Answer: Electrostatics

Q. SI unit of electric potential is voltsohmcoulombnewton Answer: volts

Q. 3 capacitors with capacitances 5µF, 6µF and 7µF are arranged in parallel combination with a battery of 5V, as 1µF = 10-6F, voltage across each capacitor is 15V5V18V20V Answer: 5V

Q. An electric charge at rest produces only a magnetic fieldonly an electric fieldneither electric field nor magnetic fieldboth electric and magnetic fields Answer: only an electric field

Q. Electric force between two point charges in air or vacuum is F. If we replace air or vacuum by an insulator (dielectric) of relative permitivity Cr the force between the charges will decreaseincreaseremain constantdepends upon composition of dielectric Answer: decrease

Q. An electric field can deflect neutronsraysboth glass rod and silk acquire negative chargenone Answer: none