I have changed the number up so that any help i do recieve i will still have to work out on my own.

V1 - 10V

R1 - 200 ohms

L1 - 400 mH

I have worked out the time constant, which i believe is 200/0.4 = 500

And now comes my problem, it says that i should work out the "Voltage across the inductor after it has been charging for 300 µs"

and then the "current flowing in the circuit after it has been discharging for 700 µs"

I know the rules state to write what i've already done, but i've gone through 5~ pieces of paper so far and got absolutely nowhere, i just need a nudge in the right direction so im more confident for my exam on thursday please, thank you

- Ryan