Electric power is sent at $400\,\text{kV}$ and stepped down to $240\,\text{V}$ before it reaches consumers. Which statement is correct?
- AA $400\,\text{kV}$ cable requires less insulation than a $240\,\text{V}$ cable.
- BBirds are subject to a high-voltage shock when resting on a high-voltage cable.
- CThe current in the transmission wires is equal to the current delivered to the consumers.
- DWith a $400\,\text{kV}$ transmission system, a smaller proportion of the energy is used to heat the atmosphere than with a $240\,\text{V}$ system.