Q. The power dissipated in a pure capacitor is zeroproportional to applied voltageproportional to value of capacitanceboth B. and C. above Answer: zero

Q. The sparking between two electrical contacts can be reduced by inserting capacitor in parallel with contactscapacitor in series with each contactresistance in linenone of the above Answer: capacitor in parallel with contacts

Q. Which of the following capacitors has relatively shorter shelf life ? Mica capacitorElectrolytic capacitorCeramic capacitorPaper capacitor Answer: Electrolytic capacitor

Q. If A.C. voltage is applied to capacitive circuit, the alternating current can flow in the circuit because varying voltage produces the charging and dicharging currentsof high peak valuecharging current can flowdischarge current can flow Answer: varying voltage produces the charging and ...

Q. Two plates of a parallel plate capacitor after being charged from a constant voltage source are separated apart by means of insulated handles, then the Voltage across the plates increasesvoltage across the plates decreasescharge on the capacitor decreasescharge on the capacitor increases ...

Q. The dissipation factor of a good dielectric is of the order of 0.00020.0020.020.2 Answer: 0.0002

Q. In a capacitor the electric charge is stored in metal platesdielectricboth A. and B.none of the above Answer: dielectric

Q. Which of the following expression is correct for electric field strength ? E = D/EE = D2/tE = jtDE= nD2 Answer: E = D/E

Q. For which of the following parameter variation, the capacitance of the capacitor remains unaffected ? Distance between platesArea of the platesNature of dielectricThickness of the plates Answer: Thickness of the plates

Q. Three capacitors each of the capacity C are given. The resultant capacity C can be obtained by using them all in seriesall in paralleltwo in parallel and third in series with this combinationtwo in series and third in parallel across this combination Answer: two in parallel and third in ...

Q. “The total electric flux through any closed surface surrounding charges is equal to the amount oflcharge enclosed”. The above statement is associated with Coulomb’s square lawGauss’s lawMaxwell’s first lawMaxwell’s second law Answer: Gauss’s law

Q. The lines of force due to charged particles are always straightalways curvedsometimes curvednone of the above Answer: always curved