Problem 55745. Voltage in a lamp

Created by Tanya Kuruvilla
Appears in Basics - Binary Logic

Difficulty:Rate

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A lamp is measured to have a resistance of R ohms when it operates at a power of P Watts. What is the voltage (in volts) being applied to the lamp? Round to 2 decimal places.
 

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418 Solutions
257 Solvers

Last Solution submitted on Mar 13, 2025

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3 Comments

3 Comments

William on 17 Sep 2022

I don't get it. How are you guys getting a result of 60.15 volts for a problem whose obviously exact answer is 60.00 volts????

GarrettRandall on 17 Sep 2022

I've also been having the issue with the correct answers being slightly off from the exact answer. How are you achieving 60.15 instead of 60?

Dyuman Joshi on 17 Sep 2022

The author of the question performed rounding after a calculation and on the final value as well. That's why the answers were a bit off.

I have corrected the test suite and rescored the solutions.

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High School Challenge

50 Problems
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