How Do You Solve Capacitance and Voltage in This Capacitor Network?

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In summary, the conversation is about solving a physics question involving capacitors connected in series and parallel. The net capacitance is calculated using the formula 1/Net Capacitance = 1/(7+3) + 1/4.4 and for part b, the voltage across each capacitor must be calculated separately. The correct solution for part a involves finding the inverse of (1/7 + 1/3) and adding it to 4.4.
  • #1
traceurnin
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I am really confused on how to solve this Physics question. I attempted the first one but is wrong for some reason.

A 7.0 micro F and a 3.0 micro F capacitor are connected in series and this combination is connected in parallel with a 4.4 micro F capacitor.

a) What is the net capacitance?
b) If 24 V is applied across the whole network, calculate the voltage across each capacitor.

For part a, i tried to do:

1/Net Capacitance = 1/(7+3) + 1/4.4 and got 3.056 for the net capacitance. However, it is saying that i am wrong. Can you tell me what i am doing wrong?
 
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  • #2
First find the capacitance of the series combination. What is it?
 
  • #3
haha nvm i get part a

for part a i got 1/7 + 1/3 and took the inverse of that then added it to 4.4 XD

how do you do part b?
 
  • #4
You have a 1/7 + 1/3 μF capacitor in parallel with a 4.4 μF capacitor. What is the voltage across the 4.4 μF capacitor? What is the voltage across the 1/7 + 1/3 μF combination capacitor?
 

FAQ: How Do You Solve Capacitance and Voltage in This Capacitor Network?

What is capacitance?

Capacitance is the ability of a system to store an electric charge. It is measured in Farads (F) and is determined by the physical characteristics of the system, such as the distance between conductors and the type of dielectric material used.

What is voltage?

Voltage, also known as electric potential difference, is the force that drives an electric current. It is measured in Volts (V) and is created by a difference in electric charge between two points. It can be thought of as the "push" that moves electrons through a circuit.

How are capacitance and voltage related?

Capacitance and voltage are directly proportional to each other. This means that as the voltage increases, so does the capacitance, and vice versa. This relationship is described by the equation C = Q/V, where C is capacitance, Q is charge, and V is voltage.

What is the difference between AC and DC voltage?

AC (alternating current) voltage fluctuates in a cyclical pattern, meaning it changes direction and magnitude over time. DC (direct current) voltage remains constant in both direction and magnitude. This difference is important in understanding how capacitance and voltage behave in different types of circuits.

How can I calculate the capacitance of a system?

The capacitance of a system can be calculated using the equation C = Q/V, where C is capacitance, Q is charge, and V is voltage. The charge can be determined by measuring the current and the time it takes for the capacitor to fully charge, while the voltage can be measured directly with a voltmeter.

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