How much current does a 310 W device draw when given a voltage of 120 V?

- 3.6•10^4 A

- 4.0•10^-2 A

- 4.2•10^2 A

- 2.6•10^0 A

Explanation:

Power is expressed as rhe product of voltage and current hence P=IV where V is voltage across the circuit, I is current and P is power. Making current the subject of rhe formula then

Substituting 310 W for power and 120 V for voltage then

Giving the answer in scientific notation, then current is

it doesn't. it was imagined up in the middle ages.

a is the best answer your welcome