Question

In domestic electric mains supply, the voltage and the current are

• A. DC voltage and AC current
• B. AC voltage and AC current
• C. AC voltage and DC current
• D. DC voltage and DC current

Hint:

In most household electrical systems, the voltage and current are alternating, with standard frequencies like 50 Hz or 60 Hz.

Answer 1

The Correct Option is B

In domestic electric mains supply, both the voltage and current are alternating, meaning they vary sinusoidally with time. Therefore, the correct answer is AC voltage and AC current. This is typical for household electrical systems where both the voltage and current are alternating, as opposed to DC (direct current) systems which have a constant value. Thus, the correct answer is option (2): AC voltage and AC current.