18/07/2026
⚡ Why Is High Voltage Used in Power Transmission?
Electricity is transmitted at high voltage because higher voltage allows the same amount of power to be delivered with lower current.
Since power loss in transmission lines is calculated using I²R, reducing the current significantly decreases heat and energy losses.
P = V × I
Higher voltage provides:
✅ Lower current
✅ Reduced power loss
✅ Less heating in transmission wires
✅ Better transmission efficiency
✅ Reliable delivery over long distances
Before electricity reaches homes and businesses, transformers reduce the voltage to a safer, usable level.
💡 High voltage makes long-distance power transmission more efficient and economical.
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