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The quantity of charge Q in coulombs (C) that has passed through a point in a wire up to time t (measured in seconds) is given by Q(t) = t3 − 2t2 + 3t + 5. [The unit of current is an ampere 1 A = 1 C/s. ] (a) Find the current (in A) when t = 0.3 s. A (b) Find the current (in A) when t = 1 s. A At what time (in s) is the current the lowest? t = s

The quantity of charge Q in coulombs (C) that has passed through a point in a wire up to time t (measured in seconds) is given by Q(t) = t3 − 2t2 + 3t + 5. [The unit of current is an ampere 1 A = 1 C/s. ] (a) Find the current (in A) when t = 0.3 s. A (b) Find the current (in A) when t = 1 s. A At what time (in s) is the current the lowest? t = s

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The quantity of charge Q in coulombs (C) that has passed through a point in a wire up to time t (measured in seconds) is given by Q ( t ) = t 3 − 2 t 2 + 3 t + 5 . [The unit of current is an ampere 1 A = 1 C / s .] (a) Find the current (in A) when t = 0.3 s . A (b) Find the current (in A) when t = 1 s . A
At what time (in s) is the current the lowest?
t = ◻ s

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