For which of the following parameter variation, the capacitance of the capacitor remains unaffected ____________?
A. Distance between plates
B. Area of the plates
C. Nature of dielectric
D. Thickness of the plates
Which of the following capacitors will have the least variation ____________?
A. Paper capacitor
B. Ceramic capacitor
C. Silver plated mica capacitor
D. None of the above
In a capacitor the electric charge is stored in____________?
A. Metal plates
B. Dielectric
C. Both (a) and (b)
D. None of the above
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____________?
A. Voltage across the plates increases
B. Voltage across the plates decreases
C. Charge on the capacitor decreases
D. Charge on the capacitor increases
Which of the following statements is correct ___________?
A. Air capacitors have a black band to indicate the outside foil
B. Electrolytic capacitor must be connected in the correct polarity
C. Ceramic capacitors must be connected in the correct polarity
D. Mica capacitors are available in capacitance value of 1 to 10 pf
If A.C. voltage is applied to capacitive circuit, the alternating current can flow in the circuit because__________________?
A. Varying voltage produces the charging and dicharging currents
B. Of high peak value
C. Charging current can flow
D. Discharge current can flow
A dielectric material must be____________?
A. Resistor
B. Insulator
C. Good conductor
D. Semi conductor