3.14 RLC circuit

What is the total opposition to current flow in an AC circuit called?

• Impedance
• Resistance
• Reactance

What unit is used to measure impedance?

• Ohm
• Farad
• Henry

In which type of circuit do DC rules and equations directly apply to AC circuits?

• Circuits containing inductance and capacitance only
• Circuits containing resistance alone
• Circuits with impedance

What additional factors must be considered in AC circuits with resistance?

• Inductance and capacitance
• Resistance only
• Voltage and current only

In an inductive circuit, how does the current behave in relation to the voltage?

• Current lags the voltage
• Current leads the voltage
• Current and voltage are in phase

In a capacitive circuit, how does the current behave in relation to the voltage?

• Current lags the voltage
• Current leads the voltage
• Current and voltage are in phase

What type of circuit has a phase angle of zero degrees (ϕ = 0)?

• Inductive
• Capacitive
• Resistive

In an inductive circuit, why does the current lag the voltage?

• Due to the build-up of the magnetic field
• Due to the charging and discharging of the capacitor
• Due to resistance

What is the relationship between voltage and current in a purely resistive circuit?

• They are out of phase
• Current lags the voltage
• They are in phase

In a capacitive circuit, what is the phase angle (ϕ) between voltage and current?

• Current leads voltage by 90°
• Voltage leads current by 90°
• They are in phase