Electrostatics MCQs

Q. The bridge used for the measurement of the value of the capacitance is Wien’s bridge Wheatstone bridge Schering bridge Hay’s bridge Answer: Schering bridge

Q. The ohmmeter reading for a short circuited capacitor is infinity few kilo ohms few megohms zero Answer: zero

Q. The capacitance C is charged through a resistance R. The time constant of the charging circuit is given by CIR 1/RC RC RIC Answer: RC

Q. Resonant circuits that tune radios to particular frequencies are called plate circuits radio circuits filter circuits fiber circuits Answer: filter circuits

Q. is that property of a capacitor which delays any change of voltage across it Inductance Capacitance Potential gradient None of the above Answer: Capacitance

Q. The time constant and R-C circuit may also be defined as the time during which the charging current falls to ______ percent of its initial maximum value 37 42 63 73 Answer: 37

Q. A capacitance of 100 fiF is connected in series with a resistance of 8000 £2. The time constant of the circuit is 0.2 s 0.4 s 0.6 s 0.8 s Answer: 0.8 s

Q. The time constant of an R-C circuit is defined as the time during which capacitor charging voltage actually rises to ______ percent of its value. 37, initial 62, initial 62, final 37, final Answer: 62, final

Q. As per Coulomb’s law, force of attraction or repulsion between two point charges is directly proportional to sum of the magnitude of charges square of the distance between them product of the magnitude of charges cube of the distance Answer: product of the magnitude of charges

Q. The presence of an uncharged conductor near a charged one increases the charge of the charged conductor capacity of the charged conductor potential of the charged conductor all of the above Answer: capacity of the charged conductor