Question

Capacitor is a device used to store charges. Charge stored on a capacitor is directly proportional

to potential applied Capacitances can be connected in series or parallel. In parallel combination

of capacitor potential across each capacitor is same and resultant capacitance is given as Cs =

C1+ C2 + C3 +….. Where as in series combination charge across each capacitor is same and

resultant capacitance is given by 1



=

1

1

+

1

2

+

1

3

+…

i. Three capacitors of equal capacitance, when connected in series have a net capacitance

of C1 and when connected in parallel, have net capacitance C2. What is the ratio C1/C2 :

a. 1/3 b. 1/9 c. 3/1 d. 9/1

ii. Capacity of a parallel plate capacitor in air and on immersing it into oil is 50 µF

and 110 µF respectively. The dielectric constant of oil is :

a. 0.45 b. 0.55 c. 1.10 d. 2.20

iii. A set of n identical capacitors, each of capacity C farad when connected in parallel has

a effective capacitance is X ohm and when capacitors are connected in series the effective

capacitance is Y farad. Find relation between C, X and Y.

a. C = b. C = Y c. C = X d. = XY

iv. A capacitor of 4C and 2 C are connected in series and this combination is in parallel

with a capacitor of C and cell of e.m.f E then charge flowing in 2C capacitor will be:

a. 2E/C b. 4EC/3 c. E/7C d. E/C

v. Three capacitors each of 4µF are to be connected in such a way that the effective

capacitance is 6µF. this can be done by connecting

a. them in parallel c. two in series and one in parallel

b. them in series d. two in parallel and one in series ki​

Answer 1

Answer:

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Explanation:

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