Solve Current Draw for Resistor 0.256 W 210 Ω - Homework Help

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Homework Help Overview

The discussion revolves around determining the maximum current that a resistor can draw given its power rating of 0.256 W and resistance of 210 Ω. The subject area pertains to electrical circuits and Ohm's law.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants express confusion regarding the variables needed to solve the problem. Some suggest that all necessary information is available, while others question how to relate power, current, and resistance.

Discussion Status

There is an ongoing exploration of the relationships between power, current, and resistance. Some participants have provided hints and guidance, particularly referencing Ohm's law, but no consensus or resolution has been reached yet.

Contextual Notes

Participants have noted a feeling of missing information, and there is an emphasis on deriving formulas that relate the known variables of current and resistance to power.

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Homework Statement



The power rating of a resistor is 0.256 W. If the value of the resistor is 210 Ω, what is the maximum current it can draw?

Homework Equations





The Attempt at a Solution


I feel like I am missing a variable. Help Please !
 
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jmatthews1991 said:

Homework Statement



The power rating of a resistor is 0.256 W. If the value of the resistor is 210 Ω, what is the maximum current it can draw?

Homework Equations





The Attempt at a Solution


I feel like I am missing a variable. Help Please !

No, you have everything you need.
Suppose the resistor draws a current I, what is the power it dissipates?
 
P=vi
 
still very confuesed
 
jmatthews1991 said:
P=vi

now give a formula for the power with only I and R in it (which are known).

hint: ohm's law
 
P=(IR)I ! ! ! ! Thank you so much !
 

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