Question

A clock radio is rated as 30 W of power output. If the radio also draws 30 W at 120 V, which will the current draw be?

Answer 1

this scenario is impossible in practice.

If it has 30 W output it must draw > 30 W input as no machine is 100% efficient.

That aside in electrical terms

Power = V x A (volts x amps)

You know power
You know V

So calculate Amps from above equation