RC Circuit Quiz

What does the time constant (τ) measure in an RC circuit?

• The total voltage

• The response time to a step input

• The current flowing

• The resistance value

After how many time constants does an RC circuit reach approximately 63.2% of its final value?

• 3τ

• 2τ

• 5τ

• 1τ

What happens to the current during the charging process of a capacitor?

• It stops

• It remains constant

• It decreases

• It increases

In a discharging RC circuit, what happens to the capacitor voltage over time?

• It increases

• It decreases

• It stays the same

• It fluctuates

What is the formula for calculating the time constant (τ) in an RC circuit?

• τ = R * C

• τ = R + C

• τ = R / C

• τ = R - C

If a capacitor is charged to 80V, what is the initial current when discharged through a resistor?

• 0V

• 80V

• 40V

• Constant

What is the unit of the time constant (τ)?

• Volts

• Farads

• Ohms

• Seconds

How long does it take for a capacitor to discharge fully?

• 1τ

• 10τ

• 5τ

• 3τ

What happens to the resistor voltage during the charging of a capacitor?

• It increases

• It decreases

• It stays the same

• It fluctuates

What is the type of RC circuit?