Question

A European traveler brings his hair dryer to the UnitedStates. The specifications on the small appliance say itdraws 10 amps when on a standard household circuit,which is 220 volts in Europe. What will it draw ifconnected directly to a U.S. power source of 110 volts?A 5 ampsB 10 ampsC 15 ampsD 20 amps

Answer 1

V/I must remain constant, since V = IR and R must remain constant.

220V/10A = 110V/I

Solving for I,

I = 110*10/220

I = 5A

Answer: A) 5 amps