What is the time constant for the discharge of the capacitor?

What is the time constant for the discharge of the capacitor?

To calculate the time constant of a capacitor, the formula is τ=RC. This value yields the time (in seconds) that it takes a capacitor to discharge to 63% of the voltage that is charging it up. After 5 time constants, the capacitor will discharge to almost 0% of all its voltage.

What is the charge q on the capacitor immediately after the switch is closed?

Answers: The initial capacitor voltage is zero. Before the switch is closed, the charge Q on the capacitor is zero and the voltage across the capacitor = V = Q/C = 0. Right after the switch is closed, the charge has not had time to build up on the capacitor and the charge and voltage are still zero.

What is the equivalent capacitance for the circuit of the figure?

The equivalent capacitance for the circuit of the figure is 0.571 µF. The charge will be the same across all the capacitors because they’re in series.

What is the time constant for the discharge of the capacitors in the figure Figure 1?

The time constant for the discharge of the capacitors is 2.0 × 10-3 s.

What is the value of the capacitor?

The nominal value of the Capacitance, C of a capacitor is the most important of all capacitor characteristics. This value measured in pico-Farads (pF), nano-Farads (nF) or micro-Farads (μF) and is marked onto the body of the capacitor as numbers, letters or coloured bands.

How long does it take to reduce the capacitor’s charge to 10 ΜC?

36.12 ms

What is the time constant for the discharge of the capacitors in the figure Figure 1 )?

At what time has the current in the 8 Ω Ω resistor decayed to half the value it had immediately after the switch was closed?

0.693 ms.

What happens to capacitor when switch is closed?

As soon as the switch is closed, current flows to and from the initially uncharged capacitor. As charge increases on the capacitor plates, there is increasing opposition to the flow of charge by the repulsion of like charges on each plate.

What happens to capacitor when switch is open?

A capacitor in an open circuit may be charged: It could be totally discharged, or it could be that the switch was opened while the capacitor was fully charged. It is also known that capacitors leak. That is, they lose their charge over time.