An electric heater running on a 120 V source draws a current of 20 A. What is the power supplied to the heater?
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An electric heater running on a 120 V source draws a current of 20 A. What is the power supplied to the heater?
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SOLUTION:
Step 1: List the given values.
[tex]\begin{aligned} & I = \text{20 A} \\ & V = \text{120 V} \end{aligned}[/tex]
Step 2: Calculate the power.
[tex]\begin{aligned} P & = IV \\ & = \text{(20 A)(120 V)} \\ & = \boxed{\text{2400 W}} \end{aligned}[/tex]
Hence, the power supplied to the heater is 2400 W.