Power loss affects electricity supply, especially to homes far from power stations. Why is power lost, and how is electricity effectively transported over long distances?
- Direct current flows in a single direction.
- Alternating current switches direction back and forth.
- Power = current x voltage.
- Transformers are used in power lines to change the voltage.
The relationship between power, voltage and current, is vital to the way electricity is supplied to our homes.
Power (P) = Current (I) x Voltage (V)
The higher the current or voltage, the more power is available.
When electricity was first produced commercially in the late 19th century, the current flowed in a ...
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