Problem 55745. Voltage in a lamp

Created by Tanya Kuruvilla
Appears in High School Challenge

Difficulty:Rate

Solve Later
Add To GroupÃ‚

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.
 

Solve

Solution Stats

436 Solutions
265 Solvers

Last Solution submitted on Apr 22, 2025

Last 200 Solutions

Problem Comments

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.

Solution Comments

Show comments

ANNOUNCEMENT

Registration Now Open for MathWorks AUTOMOTIVE CONFERENCE 2025

Hello Community, We're excited to announce that registration is now open for the...

Group

High School Challenge

50 Problems
99 Finishers

Problem Recent Solvers265

Problem Tags

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!