Solve Electric Current & Find E, I & Power Loss

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Homework Help Overview

The discussion revolves around a circuit problem involving electric current, battery voltage, and power loss in a resistor. Participants are tasked with finding the total current, battery voltage, and power loss based on given equations and circuit parameters.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants discuss the relationships between current and voltage in the circuit, referencing Kirchhoff's rules and the need for specific values to proceed with calculations. Questions arise regarding the lack of given current values in the branches and the implications for solving the problem.

Discussion Status

The discussion is ongoing, with participants exploring the need for additional information to solve the problem. Some guidance has been offered regarding the symbolic nature of potential solutions without specific values, but no consensus has been reached on a definitive approach.

Contextual Notes

Participants note that the assignment lacks specific current values or battery voltage, which are essential for a complete solution. This constraint is central to the discussion as they navigate the implications of missing information.

Phemzy
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Homework Statement


In the circuit below, find
(1) The total current in the circuit
(2) The battery voltage E
(3) The power loss in the 20ohms resistor

Homework Equations


V=IR


The Attempt at a Solution


I=I1+I2
V=30I1 and V=40I2
30I1 = 40I2
or
V-30I1 = V-40I2
 

Attachments

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Last edited:
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Hi Phemzy, welcome to PH.
Please check the problem again. To solve the problem, they must give a current in anyone branch.
 
Hi rl.bhat,

That is how the lecturer gives us the assignment.

No additional information was given

Some of my course mate said, we should use Kirchoff's rule.
 
Without a specific value for the battery voltage or a branch current or *something* to tell you how much energy is moving in the system, the best you can do is to find the answers symbolically.
 

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