1.3 Determine current flow through an element if the charge flow is given in the form of an equation

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Determine the current flowing through an element if
the charge flow is given by:
(a) q(t) = (3) mC
(b) q(t) = (4t2 + 20t − 4) C
(c) q(t) = (15e−3t − 2e−18t) nC
(d) q(t) = 5t2(3t3 + 4) pC
(e) q(t) = 2e−3t sin (20π t) μC

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Book: Fundamentals of Electric Circuits
Author: Charles K. Alexander | Matthew N.O. Sadiku
ISBN-13: 978-0-07-802822-9

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Why there is no limit applied in the last part ?

syed_shahir
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I can't understand problem (d) .. Please make an another video of it..

lamiaakter
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i think you did it wrong at d, because when i try to check it is not 0 as what it should. i got it 4/25. CMIIW

rachelpgtg
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Determine the current flowing through an element if the charge flow is given by:
(a) q(t) = (3) mC

Answer: Zero, right?!

FoodwithFawzi
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helpful although you bit about the bush in your explanations

kendrickphiri