A 120-volt load draws 8 amperes. What is its effective resistance?

Texas Journeyman exam practice question · Branch Calculations & Conductors

A 120-volt load draws 8 amperes. What is its effective resistance?

15 ohms
B128 ohms
C960 ohms
D0.067 ohm

Why A is correct

Ohm’s law gives resistance as voltage divided by current. Dividing 120 volts by 8 amperes gives 15 ohms; multiplying the values would calculate volt-amperes instead.

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A 120-volt load draws 8 amperes. What is its effective resistance?

A 120-volt load draws 8 amperes. What is its effective resistance?

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