Physics – 4.5.6 The transformer | e-Consult
4.5.6 The transformer (1 questions)
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Three advantages of high-voltage transmission are:
- Reduced current: For a given amount of power (P = VI), increasing the voltage (V) requires a decrease in current (I). Lower current reduces I2R losses in the transmission lines.
- Reduced I2R losses: The power lost as heat in the wires is proportional to the square of the current (I2R). Lowering the current significantly reduces these losses, making transmission more efficient.
- Longer distances: High-voltage transmission allows electricity to be transmitted over longer distances with less power loss compared to low-voltage transmission. This is essential for connecting power generation plants to areas where the electricity is needed.