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TwoEG
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Homework Statement
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In the circuit the switch is closed for several seconds, then opened. Make a graph with the abscissa time in milliseconds, showing the potential of point A with respect to ground, just before and then for 10 milliseconds after the opening of switch. Show also the variation of the potential at point B in the same period of time.
Homework Equations
V=iR
E=L*di/dt
Kirchhoff's laws
The Attempt at a Solution
[/B]So is there any potential larger than ground(V=0) on point A just after the switch is opened? In one way I think there should be some potential left since discontinuous change is unnatural. But I cannot clearly prove this. Also, the problems asks me to get the variation of potential B as time passes, but since point B is grounded, I cannot help thinking that potential of B is just 0 regardless of time. Am I wrong?