Question

For distant transmission of electric power, an alternating current (ac) is considered to be advantageous over direct current (dc). Why?

Answer 1

AC vs. DC for power transmission: Alternating current (AC) is advantageous for long-distance transmission of electric power because:

• AC voltage can be easily stepped up (increased) using a transformer to reduce power loss during transmission, then stepped down at the user end. DC voltage cannot be easily stepped up or down.
• AC can be generated easily and efficiently compared to DC.
• AC is less susceptible to voltage drop during transmission over long distances.