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Home Minds On Electric Circuits Mission EC6 P, V, I, R, and Cost Calculations Help Help 6

Mission EC6 P, V, I, R, and Cost Calculations

The Question

An appliance draws 9.2 amps of current when plugged into a 120-Volt outlet. What is the appliance's power rating (in watts)? (Enter your answers to the second decimal place.)
 
(Note: The numbers in this problem are randomly selected and may differ from those above.)

Define Help

The power (P) or rate at which energy is transformed by an appliance is related to the electric potential difference (or voltage drop or ∆V) impressed across it and the current (I) through it. These quantities are related by the equation
 
P = I • ∆V.

Bright Idea

This mission focuses on numerous electrical quantities and their relationship with one another. Having a solid grasp of the quantities will be crucial to your success on this mission. It would be a wise idea to develop a list of such quantities, the units used to express them, the symbol used to represent them and the equations that relate them. The quantities that you might want to have on your list include power, energy, resistance, current, voltage and cost.

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