A 5pF capacitor is connected in series with the 10 PF capacitor and th...
Explanation:
Capacitors in Series:
When capacitors are connected in series, the equivalent capacitance is given by:
1/Ceq = 1/C1 + 1/C2 + ...
In this case, we have two capacitors in series:
1/Ceq = 1/5pF + 1/10pF
Ceq = 3.33pF
Charge and Voltage:
The charge on each capacitor is given by:
Q = CV
where Q is the charge, C is the capacitance, and V is the voltage across the capacitor.
The potential difference across each capacitor can be found using Kirchhoff's voltage law:
V = V1 + V2
where V is the voltage across the combination of capacitors, V1 is the voltage across the 5pF capacitor, and V2 is the voltage across the 10pF capacitor.
Ratio of Voltages:
We can find the ratio of V1 to V2 by using the fact that the charge on each capacitor is the same:
Q = CV1 = Ceq(V1 + V2)
Solving for V1, we get:
V1 = (Ceq/C)V - V2
Substituting in the values of Ceq, C, and V, we get:
V1/V2 = (1/2) - 1 = -1/2
Therefore, the potential difference across the 5pF capacitor is half of the potential difference across the 10pF capacitor, but in the opposite direction.