A. It will become magnetic
B. It will melt
C. It will get punctured or cracked
D. Its molecular structure will get changed
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 - Voltage applied across a ceramic dielectric produces an electrolytic field 100 times greater than air. What will be the value of dielectric constant ________?
A. 50
B. 100
C. 150
D. 200 - Which of the following capacitors will have the least value of breakdown voltage________ ?
A. Mica
B. Paper
C. Ceramic
D. Electrolytic - Dielectric strength of a medium is usually expressed in____________?
A. J/mm
B. C/m2
C. kV/mm
D. N/mm - Which medium has the least dielectric strength ____________?
A. Paraffin wax
B. Quartz
C. Glass
D. Air - A potential of 400 V is applied to a capacitor, the plates of which are 4 mm apart. The strength of electric field is___________?
A. 100 kV/m
B. 10 kV/m
C. 5 kV/m
D. 2 kV/m - 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 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 - 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 - In a cable capacitor, voltage gradient is maximum at the surface of the______________?
A. earth
B. conduction
C. sheath
D. insulator
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