Capacitance Reactance

Frequency is measured in?

• Seconds

• Hertz

• Henries

• Farads

Tags

NGSS.HS-PS4-1

Capacitance is measured in?

• Seconds

• Hertz

• Henries

• Farads

Capacitive Reactance is measured in?

• Amps

• Volts

• Ohms

• Watts

What formula is pictured?

• Inductive Reactance

• Capacitive Reactance

• EMF

• Power

A resistor is connected to an AC power supply. The current in this circuit ____

• Leads the voltage by 90

• Lags the voltage by 45°

• Lags the voltage by 90°

• in phase with the voltage

A capacitor is connected to an AC power supply. The current in this circuit ____

• Leads the voltage by 90°

• Lags the voltage by 45°

• Lags the voltage by 90°

• in phase with the voltage

In an AC series circuit, the current in a pure resistor differs in phase with the applied voltage by what angle?

• 0°

• 45°

• 90°

• 80°

Which of the following statements is FALSE for a resistor connected in a simple series circuit to an operating AC generator?

I. The average power dissipated in the resistor is positive

II. The average power dissipated in the resistor is zero

III. The average current is zero

• I only

• II only

• III only

• I and III only

The graph below represents an AC circuit that consists of a generator and a capacitor. The voltage __________.

• lags the current by 45°

• lags the current by 90°

• leads the current by 45°

• leads the current by 90°

As the frequency of the AC voltage across a capacitor approaches zero, the capacitive reactance of that capacitor _______.

• approaches zero

• approaches infinity

• becomes negative

• does not change