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Direction. Follow the instruction and derive the formula given.
1. Using the definition C = Q/V, show that for a SERIES connection of capacitors: 1/C = 1/C1 + 1/C2. What does this equation mean? What happens to C as more and more capacitors are connected in series?

2. Using the definition C = Q/V, show that for a PARALLEL connection of capacitors: C = C1 + С2. What does this equation mean? What happens to C as more and more capacitors are connected in parallel?​


Sagot :

Answer:

Explanation:

The total voltage is the sum of the individual voltages:

V=V_1+v_2+V_3\\\frac{q}{C_s}=\frac{q}{C_1}+\frac{q}{C_2}+\frac{q}{C_3}V=V

1

+v

2

+V

3

C

s

q

=

C

1

q

+

C

2

q

+

C

3

q

Canceling the Qs, we obtain the equation for the total capacitance in series CS to be

\frac{1}{C_s}=\frac{1}{C_1}+\frac{1}{C_2}+\frac{1}{C_3}

C

s

1

=

C

1

1

+

C

2

1

+

C

3

1

An expression of this form always results in a total capacitance CS that is less than any of the individual capacitances C1, C2, …

It tends to zero.

2) Using the relationship Q = CV, we see that the total charge is

C_pV=C_1V+C_2V+C_3VC

p

V=C

1

V+C

2

V+C

3

V

Canceling V from the equation, we obtain the equation for the total capacitance in parallel

C_p=C_1+C_2+C_3C

p

=C

1

+C

2

+C

3

Total capacitance in parallel is simply the sum of the individual capacitances.