RC Parallel Circuits Quiz

What is the frequency of the alternating voltage source used in the example problem?

• 60 Hz

• 55 Hz

• 65 Hz

• 50 Hz

How is the capacitive reactance (Xc) calculated in an RC parallel circuit?

• Xc = C / R

• Xc = R / C

• Xc = 2πfC

• Xc = 1 / (2πfC)

In a parallel circuit, how does the voltage across each branch compare to the source voltage?

• It is half of the source voltage

• It is double the source voltage

• It is equal to the source voltage

• It is zero

What is the phase relationship between the current and voltage in a resistor within an AC circuit?

• Current leads voltage by 90 degrees

• Current lags voltage by 90 degrees

• Current and voltage are in phase

• Current and voltage are out of phase

How is the total current in a parallel RC circuit determined using a phasor diagram?

• By multiplying the currents

• By subtracting the currents

• By adding the currents vectorially

• By adding the currents algebraically

What is the formula for calculating impedance (Z) in a parallel RC circuit?

• Z = 1 / √(1/R² + 1/Xc²)

• Z = R + Xc

• Z = R * Xc

• Z = R - Xc

What is the unit of admittance in an electrical circuit?

• Ohms

• Farads

• Henrys

• Siemens

How is the conductance (G) related to resistance (R) in a parallel circuit?

• G = R/2

• G = R

• G = R²

• G = 1/R

What is the phase angle between the total current and voltage in the example problem?

• 60 degrees

• 30 degrees

• 45 degrees

• 38 degrees

What is the relationship between admittance (Y) and impedance (Z) in a parallel circuit?

• Y = Z/2

• Y = 1/Z

• Y = Z

• Y = Z²