Final answer:
To find the current through the lightbulb, calculate its resistance first and then apply Ohm's Law to determine the current.
Explanation:
The current through a 75-W lightbulb connected to a 120-V outlet can be calculated using Ohm's Law.
- Calculate the resistance of the lightbulb using P = V^2/R. R = V^2/P = 120^2/75 = 192 ohms.
- Now, use Ohm's Law, I = V/R, to find the current. I = 120/192 = 0.625 A.
Therefore, the current through the lightbulb is 0.625 amperes.
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