Problem 55745. Voltage in a lamp

Created by Tanya Kuruvilla

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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Last Solution submitted on Apr 22, 2025

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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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Problem 55745. Voltage in a lamp

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Last 200 Solutions

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Registration Now Open for MathWorks AUTOMOTIVE CONFERENCE 2025

Problem Recent Solvers265

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Problem 55745. Voltage in a lamp

Solution Stats

Last 200 Solutions

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Solution Comments

Registration Now Open for MathWorks AUTOMOTIVE CONFERENCE 2025

Problem Recent Solvers265

Suggested Problems

More from this Author31

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