Find the Current of a circuit, all you are given is P= .4W

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SUMMARY

The discussion focuses on calculating the current in a circuit when only the power (P) is provided, specifically P = 0.4W. The equation P = VI (Power = Voltage x Current) is highlighted, indicating that additional information, such as voltage (V), is necessary to determine the current (I). Participants confirm that without another parameter, the current cannot be calculated. A request for a circuit diagram suggests that visual representation may aid in understanding the problem.

PREREQUISITES
  • Understanding of electrical power equations, specifically P = VI.
  • Basic knowledge of circuit components and parameters.
  • Familiarity with Ohm's Law.
  • Ability to interpret circuit diagrams.
NEXT STEPS
  • Research how to derive current from power and voltage using P = VI.
  • Learn about circuit diagrams and their significance in electrical calculations.
  • Explore Ohm's Law and its application in circuit analysis.
  • Investigate common electrical components that affect power, voltage, and current.
USEFUL FOR

Students studying electrical engineering, educators teaching circuit analysis, and anyone seeking to understand the relationship between power, voltage, and current in electrical circuits.

jdub88
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Homework Statement


Find the Current of a circuit, all you are given is P= .4W


Homework Equations





The Attempt at a Solution



Not sure what to do? P=VI
.4=VI
Am i missing some relevant info here? Or can you find Current if you are just given P?
 
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No. You must be given another parameter.
 
Can you show us what the circuit looks like? In a diagram maybe??
 

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This method may be more intuitive for some people.
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