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Published byEthan Burns Modified over 9 years ago
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Do now! Have a look through your test and fill in the front of your “Tests folder”. Can you then write a target for the next topic under the target sheet for the inheritance module
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Stand up! ☺
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Electricity
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Today’s lesson Understand that current is the rate of flow of charge Looking at current in different circuits
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☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺
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☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ cell energy electron lamp
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☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ cell energy electron lamp Can you copy this please?
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Electrons ☺ Hi, I’m Jack the electron.
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Coulomb of charge (electrons) Think of it as a “bag of electrons” (containing 6000000000000000000 electrons!) ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺
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Current The number of Coulombs flowing past a point in the circuit every second. ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ ☺ A I’m counting how many coulombs of electrons go past me every second 1 Amp = 1 coulomb per second
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Current ☺ Let’s build some circuits and investigate current.
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Stand up! ☺
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In a series circuit Current is the same at any point in the circuit 2.5 A
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In a series circuit Current is the same at any point in the circuit 2.5 A ☺ Can you copy this please?
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In a parallel circuit The current splits (total current stays the same) 2.5 A 1.25 A
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In a parallel circuit The current splits (total current stays the same) 2.5 A 1.25 A ☺ Can you copy this please?
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Milliamps! 1 A = 1000 mA 1 mA = ?
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Milliamps! 1 A = 1000 mA 1 mA = 0.001 A
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