Understanding Electric Power and Transformer Input: A Detailed Explanation

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The term 'power' in the context of electric power refers to the rate at which energy is transmitted, quantified as 110 kW, meaning 110,000 joules of electrical energy are transferred every second. The input power of a transformer is calculated using the formula P = UI, where U is voltage and I is current, indicating that this power includes energy lost as heat in the cables and the energy consumed by the connected device. The discussion raises questions about the relationship between input power and output power, suggesting that they may not always be equal due to energy losses. Understanding these differences is crucial for analyzing transformer efficiency and overall energy transmission. The complexities of input and output power highlight the importance of considering energy losses in electrical systems.
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What really does the word 'power" mean in the following context?

An electric power of 110kW is transmitted through the cables.

Input power of the transformer
 
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P = UI, this is the power the current heats the cable + the power the device in the other end is using.
 
That means that 110,000 joules of electrical energy is being transmitted every second.
 
how about input power and output power?
 
... sounds like there's an extra complication about this problem or else itd obviously be the same #'s
 

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