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Capacitor - Questions and Answers

Practice questions on Capacitor.

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6. The dielectric inside a capacitor basically increases
A. voltage rating
B. current rating
C. capacitance
D. power rating
Explanation:
7. The unit of capacitance is
A. coulomb
B. joule
C. volt
D. farad
Explanation:
8. The ratio of the charge to potential is
A. resistance
B. current
C. temperature co-efficient of resistance
D. capacitance
Explanation:
9. The area of each plate of a parallel plate capacitor is 4  10-2m2. If the thickness of the dielectric placed in between the plates is 10-3 and the relative permittivity of the dielectric is 7, then the capacitance of the capacitor
A. 2.478  10-9F
B. 0.2478  10-9F
C. 2.478  10+9F
D. 2.478 F
Explanation:
10. When two capacitors of capacitances 2 pF and 6 pF connected in parallel, the effective capacitance is
A. 8 pF
B. 12 pF
C. 3/2 pF
D. 4 pF
Explanation: