15. The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 127.5 V ? A.8.5 A B.24 A C.10 A D.12 A
Option A Solution: V = 60V and I = 4A R = V/I = 60/4 =15Ω When potential difference is increased to 127.5 V I = V/R = 127.5/15 = 8.5 A The current through the heater becomes 8.5 A.
