An electric iron operates on a 120-volt outlet and uses 2.30 amps of current. how much power does the iron use?
a. 0.019 watts
b. 276 watts
c. 52 watts
d. 630 watts

There are a few different formulas for electrical power.  They involve
different combinations of voltage, current, and resistance.

        ==>         Power  =  (current)²  x  (resistance)

        ==>         Power  =  (voltage)²  /  (resistance)

        ==>         Power  =  (voltage)  x  (current) .

In this case right now, we know the voltage and current, so maybe
it's a good idea to use the formula that involves voltage and current.

               Power  =  (voltage) x (current)

                         =    (120 volts) x (2.3 Amperes)

                          =       276 watts .  

Ithink the answer would be a