TUTORIAL CHAPTER 8: AC CIRCUIT

What is the amplitude of y = 3 cos 2t?

• 3
• 2
• 90
  90⁰
• 350⁰

Which equation?

• y= -cos(2t)
• y= cos(2t)
• y= (1/2)cos(t)
• y= (-1/2)cos(x)

A sinusoidal current is usually referred to as __________ current.

• alternating

• steady current
• constant current
• direct

Current that is used by most household appliances

• AC
• DC
• BC
• AC/DC

Current from a battery is 

• AC
• DC
• BC
• AC/DC

Write an equation that solves for the impedance,   $Z_{total}$  , of this series circuit.

•  $Z_{total}=\sqrt{R^2+X^2}$  

•  $Z_{total}=\sqrt{R^2-X^2}$  

•  $Z_{total_{ }}=R^2+X^2$  

•  $Z_{total}=R^2-X^2$  

Calculate the total impedance if C=50nF and R=2000 Ohm.

• 106200 Ohm

• 5175 Ohm

• 3250 Ohm

• 21000 Ohm

What should RLC Circuit contains ??? (Choose all correct answers)

• Resistor

• Capacitor

• Inductor

• Transistor