What is the resistance of a 1550 W 120 V hair dryer R Part

What is the resistance of a 1550 W (120 V ) hair dryer?
R =____

Part B
What is the current in the 1550 W (120 V ) hair dryer when it is used?
I = ____A

Solution

Power P = 1550 W

VOltage V = 120volt

We know P = V ²/R

From this resistance R = V ²/P

                                  =120 ² /1550

                                  = 9.29 ohm

(b). Current i = V / R

                   = 120 / 9.29

                   = 12.91 A