Capacitive Reactance

What is capacitive reactance (Xc)?

In what unit is capacitive reactance measured?

What is the formula for capacitive reactance?

• The formula for capacitive reactance (Xc) is given by Xc = 1 / (2πfC), where f is the frequency in hertz and C is the capacitance in farads.

• The formula for capacitive reactance (Xc) is given by Xc = 2πfC, where f is the frequency in hertz and C is the capacitance in farads.

• The formula for capacitive reactance (Xc) is given by Xc = f / (2πC), where f is the frequency in hertz and C is the capacitance in farads.

• The formula for capacitive reactance (Xc) is given by Xc = C / (2πf), where f is the frequency in hertz and C is the capacitance in farads.

In the formula Xc = 1/(2πfC), what does 'f' represent?

• Capacitance

• Frequency

• Inductance

• Resistance

Tags

NGSS.HS-PS4-1

What do capacitors store and release?

• Electric charge

• Water

• Sound

• Light

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-1

In AC circuits, when do capacitors charge?

• During the positive half-cycle

• During the negative half-cycle

• When the voltage is constant

• When the current is zero

In AC circuits, when do capacitors discharge?

• When the voltage across them decreases

• When the current through them increases

• When the frequency of the AC circuit increases

• When the resistance in the circuit decreases

Tags

NGSS.HS-PS4-1

By how many degrees does current lead voltage in AC circuits?

• 30 degrees

• 60 degrees

• 90 degrees

• 0 degrees

Tags

NGSS.HS-PS4-5

What is the effect of higher frequencies on reactance in AC circuits?

• Reactance increases

• Reactance decreases

• Reactance remains the same

• Reactance becomes zero

Tags

NGSS.HS-PS4-1

What is the effect of lower frequencies on reactance in AC circuits?

• Reactance increases

• Reactance decreases

• Reactance remains the same

• Reactance becomes zero

Tags

NGSS.HS-PS4-1