3
QuizMultiple Choice
Electricity Use in Homes and Businesses
Question 3 • NJ-Physics
Gina examines the equations for electric power and Ohm's law. She thinks that there is a third equation that can calculate power using only voltage and resistance.
Answer
A
It is correct, because I = .
B
It is correct, because I = .
C
It is incorrect, because both equations for power use current.D
It is incorrect, because Ohm’s law does not include I2.