- #1
BonBon101
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Homework Statement
The voltage(V) volts in a circuit at time(t) is given by
V(t)=18(1 - e -4t/9)
Find the expression for dV/dt.
Hence evaluate dV/dt at
(a)t=0 and (b)t=5 seconds
Homework Equations
Just wondering if this is right and if not where did i go wrong
The Attempt at a Solution
dV/dt=18(-4/9)(1-e-4/9t)
= -9(1-e-4/9t)
(a) t=0 -8(1-e-4/9(0))
=0mA
(b)t=5 -8(1-e-4/9(5))
=-7.13mA