A. low permittivity
B. high permittivity
C. permittivity same as that of air
D. permittivity slightly more than that of air
Related Mcqs:
- While testing a capacitor with ohm meter, if the capacitor shows charging, but the final resistance reading is appreciably less than normal, it can be concluded that the capacitor is____________?
A. short-circuited
B. open circuited
C. alright
D. leaky - 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 - When a dielectric slab is introduced in a parallel plate capacitor, the potential difference between plates will______________?
A. remain uncharged
B. decrease
C. increase
D. become zero - A mica capacitor and a ceramic capacitor both have the same physical dimensions. Which will have more value of capacitance _______?
A. Ceramic capacitor
B. Mica capacitor
C. Both will have identical value of capacitance
D. It depends on applied voltage - A capacitor having capacitance of 5 uF is charged to a potential difference of 10,000 V. The energy stored in the capacitor is__________?
A. 50 joules
B. 150 joules
C. 200 joules
D. 250 joules - A capacitor in a circuit became hot and ultimately exploded due to wrong connections, which type of capacitor it could be ?
A. Paper capacitor
B. Ceramic capacitor
C. Electrolytic capacitor
D. Any-of the above - A 5 μF capacitor has a potential difference across its plates of 200 volts. The charge on the capacitor is____________?
A. 2.5 x 10-8 C
B. 10-5 C
C. 103 C
D. 4 x 103 C - Dielectric strength of medium____________?
A. increases with rise in temperature
B. increases with moisture content
C. is same for all insulating materials
D. none of the above - Dielectric strength of a medium is usually expressed in____________?
A. J/mm
B. C/m2
C. kV/mm
D. N/mm - Dielectric constant for mica is nearly_____________?
A. 200
B. 100
C. 3 to 8
D. 1 to 2
