RC Circuits

What is the time constant of an RC circuit?

• The product of resistance and capacitance

• The sum of resistance and capacitance

• The difference between resistance and capacitance

• The ratio of resistance to capacitance

In an RC circuit, what happens to the voltage across the capacitor over time when charging?

• It increases exponentially

• It decreases exponentially

• It remains constant

• It oscillates

What is the unit of the time constant in an RC circuit?

• Seconds

• Ohms

• Farads

• Henrys

Which component in an RC circuit stores energy in the form of an electric field?

• Capacitor

• Resistor

• Inductor

• Transformer

Tags

NGSS.HS-PS3-2

In an RC circuit, what is the initial current when a capacitor starts charging?

• Maximum

• Zero

• Half of maximum

• Minimum

What is the formula for the voltage across a charging capacitor in an RC circuit?

How does the time constant affect the charging rate of a capacitor in an RC circuit?

• Larger time constant means slower charging

• Larger time constant means faster charging

• Time constant has no effect

• Time constant only affects discharging

What is the steady-state voltage across a capacitor in an RC circuit connected to a DC source?

• Equal to the source voltage

• Zero

• Half of the source voltage

• Double the source voltage

In an RC circuit, what happens to the current over time when discharging a capacitor?

• It decreases exponentially

• It increases exponentially

• It remains constant

• It oscillates

What is the effect of increasing resistance in an RC circuit on the time constant?

• Increases the time constant

• Decreases the time constant

• No effect on the time constant

• Reverses the time constant