Block 4 AC Terms

What is the unit of measure for frequency in AC circuits?

• Hertz (Hz)

• Volt (V)

• Ampere (A)

• Ohm (Ω)

In an AC circuit, what component stores energy in a magnetic field?

• Resistor

• Capacitor

• Inductor

• Transformer

Tags

NGSS.HS-PS3-2

What type of current continuously changes direction?

• Direct Current (DC)

• Alternating Current (AC)

• Static Current

• Pulsating DC

What is the opposition to current flow in an AC circuit due to inductance and capacitance called?

• Resistance

• Reactance

• Impedance

• Conductance

Which device in an AC circuit can step up or step down voltage levels?

• Resistor

• Transformer

• Capacitor

• Inductor

What is the term for the maximum value reached by an alternating quantity during one cycle?

• Average Value

• RMS Value

• Peak Value

• Instantaneous Value

What type of circuit has the same current flowing through all components?

• Parallel Circuit

• Series Circuit

• Complex Circuit

What is the phase difference between voltage and current in a purely resistive AC circuit?

• 90 degrees

• 45 degrees

• 0 degrees

• 180 degrees

What happens to the capacitive reactance (XC) as the frequency of the AC signal increases?

• Increases

• Decreases

• Remains the same

• Becomes zero

Tags

NGSS.HS-PS4-1

What term describes the power consumed in an AC circuit where voltage and current are in phase?

• Reactive Power

• Apparent Power

• True Power

• Complex Power