The current i in a circuit is given by:

i = (0.007)(1-e^-1000t)

Using the Chain Rule, find the voltage v, where v = (0.005)di/dt

I am totally confused by this question for by BTEC Level 4 qualification.

Any help would be greatly appreciated.

I have uploaded what I have done so far.

Best regards
Sean

 

I wonder if there is something wrong with the statement of the problem. To my eye, you don't need the chain rule tool to solve this since there is only one term in t. Sure, you could use the chain rule in a simple way where one term is the constant, but you don't need to.

 

I think it's referring to the chain rule applied to

g(t) = e^f(t)

dg(t)/dt = e^f(t) · df(t)/dt