Q. A parallel plate capacitor is charged and the charging battery is disconnected. Then a dielectric slab is introduced between the plates. The quantity that remains unchanged is________ potentialcapacityenereycharge Answer: charge

Q. If we measure the intensity of the electric field (E) at various points between the surface and the centre of a uniformly charged spherical conductor we find that the intensity of electric field_________ goes on increasinggoes on decreasingis zero at all pointsremains the same at all points ...

Q. The number of Faraday tubes of flux passing through a surface in an electric field is called electric fluxelectric flux densitymagnetic flux densityelectric charge density Answer: electric flux

Q. at a point is equal to the negative potential gradient at that point Electric intensityElectric fluxMagnetic fluxMagnetic flux density Answer: Electric intensity

Q. Electric displacement is a______quantity. scalarvectorboth of the abovenone of the above Answer: vector

Q. Electric intensity at any point in an electric field is equal to the at that point. electric fluxmagnetic flux densitypotential gradientnone of the above Answer: potential gradient

Q. The value of E within the field due to a point charge can be found with the help of Faraday’s lawsKirchhoff s lawsCoulomb’s lawsnone of the above Answer: Coulomb’s laws

Q. The unit of dielectric strength is given by V/mV2/mm/Vm/V2 Answer: V/m

Q. Two infinite parallel plates 10 mm apart have maintained between them a potential difference of 100 V. The acceleration of an electron placed between them is 0.56 x 1015 m/s21.5 x 1015 m/s21.6 x 1015 m/s21.76 x 1015 m/s2 Answer: 1.76 x 1015 m/s2

Q. A capacitor having capacitance of 5 uF is charged to a potential difference of 10,000 V. The energy stored in the capacitor is 50 joules150 joules200 joules250 joules Answer: 250 joules