Physics
Physics
Problem
Cables transmit electrical power from the output of the transformer at a power station to the input of another transformer at a substation. The power at the output of the transformer at the power station is 400 MW. Which situation delivers the most power to the input of the transformer at the substation?| A | potential difference at power station transformer output / kV | diameter of cables |
|---|---|---|
| A | 200 | large |
| B | 200 | small |
| C | 400 | large |
| D | 400 | small |