Question

Power is transmitted across large distances through wires having ___ current and ___voltage.

• A. low, low
• B. high, low
• C. low, high
• D. high, high

Answer 1

The correct option is C low, high

Power is transmitted across large distances through wires carrying a low current and having a high potential difference across them. This is to prevent power loss by heating, as heat energy dissipated is directly proportional to the square of current flowing through it $(H\propto I^2)$.