Capacitors

Question 1

Charge is

Answer 1

Q=VC

Question 2

Sum of capacitance of capacitors in parrallel

Answer 2

Cₙ = C₁ + C₂ + C₃

Question 3

Sum of capacitance of capacitors in series

Answer 3

Cₙ^-1 = C₁^-1 + C₂^-1 + C₃^-1

Question 4

Potential across cappacitors in parrallel

Answer 4

Is constant

Question 5

Sum of charge of capacitors in parrallel

Answer 5

Q ∝ C

Qₙ = Q₁ + Q₂ + Q₃

Question 6

Sum of charge of capacitors in series

Answer 6

Q ∝ C

Qₙ^-1 = Q₁^-1 + Q₂^-1 + Q₃^-1

Question 7

Potential across cappacitors in series

Answer 7

Vₙ = V₁ + V₂ + V₃

Question 8

Potential Energy is

Answer 8

W = 0.5QV

Question 9

Current when charging a capacitor

Answer 9

I = I₀e^(-t/CR)

Where R is the circuit resistance

Question 10

Potential when charging a capacitor

Answer 10

V = V₀(1-e^(-t/CR))

Where R is the circuit resistance

Question 11

Current when discharging a capacitor

Answer 11

I = I₀e^(-t/CR)

Where R is the circuit resistance

Question 12

Potential when discharging a capacitor

Answer 12

V = V₀e^(-t/CR)

Where R is the circuit resistance

Question 13

Charge when discharging a capacitor

Answer 13

Q = Q₀e^(-t/CR)

Where R is the circuit resistance

Question 14

Time Constant is

Answer 14

t = CR