Summary

• Resistivity
• Electric power

• Written Quiz    Timer
  
  
• DC circuits
  • series resistors applet
    Example #1
    
  • parallel resistors applet
  • combination circuits applet
  
  

sj6 28.8
A 75 W @ 120 V lamp is connected to an extension cord with two wires of 0.800 W each. What power is actually delivered to the lamp?
A. 75.0 W           B. 74.5 W
C. 73.8 W           D. 72.2 W
Answer







 



C. 73.8 W