AP Physics 2: Circuits Containing Capacitors

Front

What is the function of a capacitor?

Back

To store energy as electric charge.

Front

What is the formula to calculate the charge (Q) on a capacitor?

Back

Q = C * V, where Q is charge, C is capacitance, and V is voltage.

Front

What is the unit of capacitance?

Back

Farad (F) is the unit of capacitance.

Front

What happens to the charge on a capacitor when the voltage is doubled?

Back

The charge on the capacitor also doubles.

Front

What is the equivalent capacitance of capacitors in series?

Back

1/C_eq = 1/C_1 + 1/C_2 + 1/C_3 + ...

Front

What is the equivalent capacitance of capacitors in parallel?

Back

C_eq = C_1 + C_2 + C_3 + ...

Front

What is a closed circuit?

Back

A closed circuit is a complete electrical loop that allows current to flow.

Front

What is an open circuit?

Back

An open circuit is a broken loop that prevents current from flowing.

Front

How do capacitors behave in an AC circuit?

Back

Capacitors allow alternating current to pass while blocking direct current.

Front

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

Back

τ = R * C, where R is resistance and C is capacitance.