Electric Current: Crash Course Physics #28
So, electric current works like a river... kinda... Instead of flowing based on elevation, electric current works a little differently. But it's a good metaphor. In this episode of Crash Course...
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Imagine you’re floating down a river. Maybe the stream is calm and serene, flowing without obstruction. Or perhaps it’s a rushing river, churning and splashing over rocks! Well, the way water moves in a river is a lot like how electricity flows through a wire. But when we say that electricity is flowing, we’re really talking about the flow of electrons. Electric current is the total amount of charge passing through a wire over a period of time. But how does current actually form? What can it pass through? And what determines how strong it is? It’s time to sit back, relax, and go with the flow. [Theme Music] Let’s talk about how we get charges to flow from one place to another. Last time, we learned that when there’s a difference in electri...
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Imagine you’re floating down a river. Maybe the stream is calm and serene, flowing without obstruction. Or perhaps it’s a rushing river, churning and splashing over rocks! Well, the way water moves in a river is a lot like how electricity flows through a wire. But when we say that electricity is flowing, we’re really talking about the flow of electrons. Electric current is the total amount of charge passing through a wire over a period of time. But how does current actually form? What can it pass through? And what determines how strong it is? It’s time to sit back, relax, and go with the flow. [Theme Music] Let’s talk about how we get charges to flow from one place to another. Last time, we learned that when there’s a difference in electri...
