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You all should be familiar with this equation: Gain = R2/R1. The human brain, on average, is between 500 to 1000 Ω in ...

I'm very glad you asked,because that means we can talk about something very helpful - circuits.A circuit is a closed loop that electricity can flow around.Let's start by building a simple circuit ...

Adding more batteries to a simple circuit will increase the electrical energy, which will make a bulb brighter. Electricity can flow through the components in a complete electrical circuit.