Friday, October 8, 2010

Chapter 20, Problems 9-12

2 comments:

Anonymous said...

I am having a problem with problem 12 part b. They are asking for the energy stored one time constant after the switch is closed. I used the formula W=(1/2)L(I^2) and to find "I," used I=(ε/R)(1-e^(-1/τ)) I plugged "I" into the 1st equation but my answer is incorrect. Where am I going wrong?

Anonymous said...

Nevermind, I just saw which part I was plugging in wrong. I don't want to give the answer away, but I will say I should not have used t=1s.