AC Circuit Formulas

Formula for the impedance of a resistor

• Z = a + jb

• Z = R

• Z = 0 - j/wC

• Z = jwL

Formula for the impedance of a capacitor

• Z = a + jb

• Z = R

• Z = 0 - j/wC

• Z = 0 + jwL

Formula for the impedance of an inductor

• Z = a + jb

• Z = R

• Z = 0 - j/wC

• Z = 0 + jwL

Formula for the wavelength of an electromagnetic wave.
c represents the speed of light

f represents frequency

• cf

• f/c

• c/f

• c + f

Tags

NGSS.HS-PS4-1

Formula for the cut-off frequency of an RC low-pass filter

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Formula for the resonant frequency of an LC circuit

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What are the units of impedence?

• Amps

• Watts

• Volts

• Ohms

What is the total impedance of an LC circuit at its resonant frequency?

• 0

• Infinity

• 1

• 

What is the wavelength in meters of a 300MHz radio wave?

• 300

• 100

• 1

• 0.5

Tags

NGSS.HS-PS4-1

What is the wavelength of a 100MHz radio wave?

• 300

• 100

• 3

• 1

Tags

NGSS.HS-PS4-1