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

Q. A unit tube of flux is known as tube NewtonFaradayMichaleNone of the above Answer: Faraday

Q. The phenomenon of an uncharged body getting charged merely by the nearness of a charged body is known as pholoelectric effectchemical effectmagnetic effectinduction Answer: induction

Q. The relative permittivity has the following units F/mm/FWb/mno units Answer: no units

Q. The total deficiency or excess of electrons in a body is known as currentvoltagepotential gradientcharge Answer: charge