Testing & TroubleshootingQuestion 481 of 521
A heating element rated at 24 ohms is connected across a 120 V supply. Using Ohm's law, what current flows through it?
a.5 A
b.0.2 A
c.2,880 A
d.144 A
Explanation
Ohm's law gives I = V / R = 120 V / 24 ohms = 5 A. Option b inverts the formula (R / V). Option c multiplies V x R and d adds them, neither is Ohm's law.
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