A. a steady value of applied voltage causes discharge
B. an increase in applied voltage makes a capacitor charge
C. decrease in applied voltage makes a capacitor charge
D. none of the above
Related Mcqs:
- 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 field line and an equipotential surface are____________?
A. always parallel
B. always at 90°
C. inclined at any angle 0
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 - A capacitor charged to 200 V has 2000 (iC of charge. The value of capacitance will be_____________?
A. 10 F
B. 10 uF
C. 100 nF
D. 1000 uF - The minimum value of potential gradient in a cable occurs in____________?
A. insulation
B. conductor
C. outer sheath
D. uniformly all over - A condenser suitable for D.C. only is________?
A. metallic plate variable gang condenser
B. metallic paper capacitor
C. oil impregrated paper condenser
D. poled aluminium electrolytic condenser - 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
A. 37, initial
B. 62, initial
C. 62, final
D. 37, final - When 4 volts e.m.f. is applied across a 1 farad capacitor, it will store energy of_____________?
A. 2 joules
B. 4 joules
C. 6 joules
D. 8 joules - Two oppositely charged balls A and B attract third conducting ball C when placed near them turn by turn. Then ball C must be______________?
A. positively charged
B. electrically neutral
C. negatively charged
D. positively and negatively charged - N/C =_____________?
A. V/A
B. J/V
C. V/m
D. A/m
