To practice Problem$-$Solving Strategy $25\mathrm{.}1$ Power and Energy in Circuits.

A device for heating a cup of water in a car connects to the car's battery, which has an emf EE $=10\mathrm{.}0$ VV and an internal resistance rintrint $=0\mathrm{.}03.$ The heating element that is immersed in the cup of water is a resistive coil with resistance RR$.$

David wants to experiment with the device, so he connects an ammeter into the circuit and measures $11\mathrm{.}0$ AA when the device is connected to the car's battery. From this, he calculates the time to boil a cup of water using the device. If the energy required is $100$ kJkJ $,$ how long does it take to boil a cup of water?