Questions On Capacitors

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CAPACITORS :-


1. Air capacitors are generally available in the range

(a) 10 to 400 pF
(b) 1 to 20 pF
(c) 100 to 900 pF
(d) 20 to 100 pF

Ans: a

2. The unit of capacitance is

(a) henry
(b) ohm
(c) farad
(d) farad/m

Ans: c


3. The power dissipated in a pure capacitor is

(a) zero
(b) proportional to value of capacitance 
(c) proportional to applied voltage
(d) both (b) and (c) above

Ans: a

4. Which of the following materials has the highest value of dielectric constant?

(a) Glass
(b) Vacuum
(c) Ceramics
(d) Oil

Ans: c

5. In a capacitor the electric charge is stored in

(a) metal plates
(b) dielectric
(c) both (a) and (b)
(d) none of the above

Ans: b

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