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**1. (See attachment) Q1 a, Determine I1,I2and I3 after 5 time constants**

b, when the switch is first closed ie t=0

c,when the switch re opens

b, when the switch is first closed ie t=0

c,when the switch re opens

**2. I total=I1-(i1+I2)**

i=I[1-e -

i=I[1-e -

^{-RL/L}**3. i havnt practiced any circuits with resitance in series and parallel just looking for a way forwerd on how to write the equations down for each one**

with the circuit initially closed i imagine its basic kirchoffs laws to calculate I1,2 and 3 but these will be very small as almost all of the supply voltage is going to the inductor but after 5 time constants at 63.2% steady state the current values will increase

with the circuit initially closed i imagine its basic kirchoffs laws to calculate I1,2 and 3 but these will be very small as almost all of the supply voltage is going to the inductor but after 5 time constants at 63.2% steady state the current values will increase

any help appreciated

regards Ian