What Causes Energy Loss in Cables?

AI Thread Summary
Energy loss in cables is primarily attributed to resistance, which increases with the length of the wire. Kirchhoff's circuit laws clarify that the current remains constant throughout the circuit, dispelling the misconception that current decreases over long leads. The discussion highlights the importance of understanding these principles in the context of transformers. Participants emphasize the need for clarity in distinguishing between similar answer choices related to energy loss. Overall, grasping these concepts is crucial for effective study and application in electrical engineering.
salihdemir
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Hello,

I am studying transformers now for the exam and I came across this question. It made a confusion in my mind. I took the photo of the question and put it into attachment.

The answers B and C looks very similar to each other and in my humble opinion both of them are true. I would be very happy if somebody explains which is true and why.

Thank you very much.

Salih
 

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Physics news on Phys.org
Analyze C using Kirchhoff's circuit laws.
 
B is true. And the longer the wire is the bigger the resistance will be.
 
Thank you, I understand now, the current must be the same everywhere. I thought in the first that because the current is being used in the long leeds, it is decreasing. But I understand that this is a misconception.
 

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