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Charlie is hosting a house party when suddenly the music stops. He asks his app, Ada, for help and she explains to Charlie various electrical concepts. Ada assists Charlie in turning the electrics back on through checking each component. Explanations include how a plug works, with the detailed operation of a fuse. Other solutions are also discussed such as checking the house circuit breaker, and how circuit breakers work.

Build various electrical circuits with a fuse, add batteries of increasing power to see how the fuse will react; measure current and voltage. Describe current and its main purposes after watching the animation. Use the animation to describe safety measures to protect you and your home from a surge of electricity. Practice the calculation of power using the voltage and current after watching the examples from the animation. Decide the most appropriate use of a fuse, choose from a variety of fuses the most appropriate size to protect a circuit. Use the animation to describe the use of a ring circuit in a home; Describe how the upstairs lights could be on after the downstairs circuit gets tripped.