
What are the main factors that cause electricity loss during transmission?
2025-08-10Answer: Electricity loss is primarily caused by the natural resistance of power lines, which converts electrical energy into heat. This is known as resistive loss (I²R loss), and it is the single largest component of technical losses. Other factors include:
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Distance: The longer the distance electricity travels, the greater the resistance and, therefore, the more energy is lost.
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Voltage Level: Higher voltages reduce the current (I) required to transmit power, which drastically reduces resistive loss (since it's proportional to the square of the current).
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Conductor Material and Size: The type and thickness of the wires used in power lines affect their resistance. Using high-quality materials and appropriately sized conductors is crucial for efficiency.
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Corona Discharge: At very high voltages, the air around power lines can ionize, leading to a visible glow and a small loss of energy.
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