Calculating Time Constant in Parallel Plates: Keeping the Capacitor Constant

Thread starter Rath123
Start date Sep 30, 2015
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Capacitor Constant Parallel Parallel plates Plates Rc circuit Time Time constant

In summary, the time constant in parallel plates is the time it takes for the capacitor to reach 63.2% of its fully charged voltage when a constant voltage is applied. It can be calculated by multiplying the capacitance by the resistance in the circuit. It is important to keep the capacitor constant when calculating the time constant in order to accurately compare results. Changing the distance between the parallel plates affects the capacitance and therefore the time constant. However, the time constant cannot be used to determine the size of the capacitor as other factors also play a role.

Sep 30, 2015

Rath123

How can a time constant, in parallel plates, be the original value without changing the capacitor?

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Sep 30, 2015

Drakkith

Mentor

I'm sorry I don't understand your question. Can you elaborate?

Related to Calculating Time Constant in Parallel Plates: Keeping the Capacitor Constant

1. What is the time constant in parallel plates?

The time constant in parallel plates refers to the time it takes for the capacitor to reach 63.2% of its fully charged voltage when a constant voltage is applied across it.

2. How is the time constant calculated in parallel plates?

The time constant (τ) in parallel plates can be calculated by multiplying the capacitance (C) of the capacitor by the resistance (R) in the circuit, or τ = R x C.

3. Why is it important to keep the capacitor constant when calculating the time constant in parallel plates?

Keeping the capacitor constant ensures that the only variable affecting the time constant is the resistance, making it easier to accurately calculate and compare results.

4. How does changing the distance between the parallel plates affect the time constant?

Changing the distance between the parallel plates changes the capacitance (C) of the capacitor, which in turn affects the time constant. A larger distance between plates results in a larger capacitance and longer time constant.

5. Can the time constant in parallel plates be used to determine the size of the capacitor?

No, the time constant in parallel plates is only dependent on the capacitance and resistance in the circuit, and cannot be used to determine the size of the capacitor. Other factors such as the material and geometry of the capacitor also play a role in determining its size.