Question

find the total capacitance between A and B if each capacitance is 4 pF​

Answer 1

Answer:

Oh I understand now that what is capacitence

Answer 2

We have to find the total capacitance between A and B if each capacitor is 4 pF.

solution : first rearrange the capacitors in the right way.

see figure, wires AP and BQ doesn't have any capacitor. so wire AP and BQ are considered as points on A and B respectively as shown in figure.

now there are A, P and B, Q two points, put all capacitors as given in the circuit. [ see figure ]

now we found relevant arrangement to find equivalent capacitance.

two capacitors are in series combination

so, 1/C₁ = 1/C + 1/C = 2/C

⇒C₁ = C/2 = 4pF/2 = 2pF

C₁ , C and C are in parallel combination

so, Ceq = C₁ + C + C

= 2pF + 4pF + 4pF

= 10 pF

Therefore the equivalent capacitance should be 10 pF