Name:
Date:
Science Section:
Calculating Power Practice Problems
Practice Problem #1
A flashlight bulb uses two 1.5-V batteries in a series to create a current of 0.5 A. What
is the power rating of the bulb? (Remember your equation: P=VI) Don’t forget to put
units on all numbers
Given: _________
__________
Solve for: ___________
Equation to use:
Solve:
Practice Problem #2
A hairdryer has a power rating of 1,200 W and uses a standard voltage of 120 V. What
is the current through the hairdryer? (Hint you will need to rearrange the equation to
solve for current in this equation. Current= Power/Voltage)
Given: _________
__________
Solve for: ___________
Equation to use:
Solve: