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Published byGodwin Whitehead Modified over 8 years ago
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Three things Charge Flow Energy
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Charge and Flow An electric current is the “flow of charge”
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Units Current is measured in AMPS Charge is measured in COULOMBS Time is measured in SECONDS
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Symbols in Equations Current is shown by the letter I Charge is shown by the letter Q Time is shown by the lettert
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Word link Current is the flow of charge If 1 coulomb of charge passes through a point in 1 second then we say the “current is 1 Amp” Current in amps is the amount of charge that flows every second
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Formula link Current = Charge ÷ time I = Q ÷ t
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Examples What is the current if 6 coulombs of charge pass around a circuit in 3 seconds?
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Examples What is the current if 6 coulombs of charge pass around a circuit in 3 seconds? Formula I = Q ÷ t
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Examples What is the current if 6 coulombs of charge pass around a circuit in 3 seconds? Formula I = Q ÷ t Substitution6 ÷ 3
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Examples What is the current if 6 coulombs of charge pass around a circuit in 3 seconds? Formula I = Q ÷ t Substitution6 ÷ 3 Calculation 2 Amps Look at the example box on your worksheet page 245 and Question 1
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Formula link as it appears on your formula sheet Current = Charge ÷ time I = Q ÷ t Rearranged (use a triangle ) Q= I x t
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