Question

What physical effect makes an RMS value an equivalent “effective” value?

Options

• AC produces the same heating effect as DC at the equivalent effective value.

• AC has the same peak current as DC at every instant.

• AC eliminates resistance during heating.

• AC voltage remains constant over one complete cycle.

Answer 1

The RMS value is defined through heating equivalence with DC. It is the effective AC value that produces the same heating effect.