What Is the Resistance of a Device Using 3 Amps and 120 Volts?

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SUMMARY

The resistance of a device using 3 amperes and 120 volts is calculated using Ohm's Law, specifically the formula R = V/I. Substituting the values, R = 120V / 3A results in a resistance of 40 ohms. The unit of resistance is confirmed to be ohms, which is essential for understanding electrical circuits.

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  • Understanding of Ohm's Law
  • Basic knowledge of electrical units (volts, amperes, ohms)
  • Familiarity with circuit analysis
  • Ability to perform simple arithmetic calculations
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  • Study the implications of resistance in electrical circuits
  • Learn about series and parallel circuit configurations
  • Explore the concept of power in electrical systems using P = VI
  • Investigate the effects of resistance on current flow
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Homework Statement


If a device uses 3 ampere and a 120 Volt, what is the resistance of the material?


Homework Equations


I think it's R=120/3


The Attempt at a Solution

My answer is 40 but I don't know 40 what? I don't know if the answer is right.
 
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Your answer is right. Unit of resistance is ohm.
 

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