- #1
minimario
- 95
- 2
Homework Statement
Homework Equations
##q = Q(1-e^{\frac{-t}{RC}})##
The Attempt at a Solution
Don't know where to start...
RC Circuit Current Help: Equations and Attempt at Solution
- Thread starter minimario
- Start date
-
- Tags
- Circuit Current Rc Rc circuit
In summary, an RC circuit is an electrical circuit that contains a resistor and a capacitor and is used to control the flow of electric current. Current flows from the positive terminal of the battery, through the resistor, and into the capacitor. Over time, the current decreases as the capacitor charges up. The resistance in the circuit affects the current by limiting its flow. To calculate the current in an RC circuit, you can use Ohm's Law or the equation I = C*dV/dt.
##q = Q(1-e^{\frac{-t}{RC}})##
Don't know where to start...
- #2
gleem
Science Advisor
Education Advisor
- 2,589
- 2,044
What can you say about the current in the branch containing the capacitor after a long period of time?
- #3
minimario
- 95
- 2
Goes to 0?
- #4
gleem
Science Advisor
Education Advisor
- 2,589
- 2,044
yes. So you are allowed to cut that part out of the circuit since doing so does not affect the rest of the circuit.
- #5
minimario
- 95
- 2
Ok, got it.
FAQ: RC Circuit Current Help: Equations and Attempt at Solution
What is an RC circuit?
An RC circuit is a type of electrical circuit that contains a resistor (R) and a capacitor (C). It is used to control the flow of electric current and can be found in many electronic devices such as radios and computers.
How does current flow in an RC circuit?
In an RC circuit, current flows from the positive terminal of the battery, through the resistor, and into the capacitor. The capacitor charges up until it reaches the same voltage as the battery, and then the current stops flowing.
What happens to the current over time in an RC circuit?
In an RC circuit, the current decreases over time as the capacitor charges up. This is because the capacitor's electric field gets stronger as it charges, making it harder for current to flow through it.
How does the resistance affect the current in an RC circuit?
The resistance in an RC circuit affects the current by limiting its flow. The higher the resistance, the lower the current, and vice versa. This is because the resistor acts as a barrier to the flow of electricity.
How can I calculate the current in an RC circuit?
To calculate the current in an RC circuit, you can use Ohm's Law (I = V/R) where I is the current, V is the voltage, and R is the resistance. You can also use the equation I = C*dV/dt, where dV/dt is the rate of change of voltage over time and C is the capacitance of the capacitor.