Electricity & Circuits
Voltage, current, and resistance — build the mental model behind every circuit, from a flashlight to a laptop.
Mr. Emeka Nwosu
Physics & Electronics Teacher
Common questions
Who is "Electricity & Circuits" for?
It is written for learners at High School level (Grades 9–12), and for anyone older who wants a clear refresher on science. Voltage, current, and resistance — build the mental model behind every circuit, from a flashlight to a laptop. There is no application or entry test — you can start the first lesson straight away.
How long does the course take?
There are 3 lessons totalling 24 minutes of reading and quizzes, laid out over 3 units. You can move at your own pace — progress is saved as you go.
What do I need to know before starting?
No prior coursework is assumed. The course opens with "Charge & Current", covering electrons and conductors & insulators, so the foundations are built in rather than expected.
Is the course free?
Yes. Every course on Monster Class is completely free, with no credit card, trial period or paywall. Creating a free account simply saves your progress, XP and place on the leaderboard across devices.