# Capacitance MCQ Questions Answers Electrical Engineering

## Electrical Engineering Capacitance MCQ Questions Answers

For those of you who have studied Electronics Engineering, here are some important questions and answers. If you are preparing for Competitive Exam, you can prepare here. Here we are providing Capacitance Questions & Capacitance Questions and Answers for all Electrical Engineering Degree Candidates who are preparing for Competitive Exam. If you want to download Capacitance Questions in PDF format, you can download Capacitance Quiz.

1) 64 drops of radius ‘r’ combine to form a bigger drop of radius R. The ratio of capacitances of bigger to smaller drop is

a) 1 : 4

b) 2 : 1

c) 1 : 2

d) 4 : 1

Option – d)

2) A capacitor of 100 pF is charged to 100 V. The charge accumulated on the plates of the capacitor is

a) 10‑6C

b) 6 x 10-2 C

c) 10-8C

d) 6 x 10-4 C

Option – c)

3) The charging of a capacitor through a resistance follows

a) linear law

b) square law

c) exponential law

d) none of the above

Option – c)

4) In a variable capacitor, the dielectric used is generally

a) air

b) solid

c) electrolyte

d) none of the above

Option – a)

5) A gang capacitor is a variable capacitor in which capacitance is changed by changing

a) distance between plates

b) plate area

c) both a and b

d) dielectric

Option – b)

6) An RC series circuit is connected to a 300 V d.c source. The voltage across the capacitor after 1 time constant is

a) 200 V

b) 126.5 V

c) 170.2 V

d) 189.6 V

Option – d)

7) A trimmer  is a variable capacitor in which capacitance is changed by changing

a) distance between plates

b) plate area

c) both a and b

d) dielectric

Option – a)

8) When the total charge in a capacitor is doubled, the energy stored

a) remains the same

b) is doubled

c) is halved

Option – d)

9) Two indentical capacitors are connected in parallel and changed to a potential of V. They are separated and then connected in series. The p.d. across series combination is

a) V

b) 4V

c) 3V

d) 2V