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Physics 132 - General
Physics II - Professor
Bunson
Fall 2001
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Today's Lecture (9/28): |
| Summary: |
- We know we can build circuits with resistors
and capacitors, but there is a mismatch between the formula for capacitors
and our approach to analyzing circuits. The former deals with charge
and voltage, whereas the latter deals with current and voltage.
- We can do this by taking the derivative of Q=CV
to get an expression with both current and voltage. This forces us
to solve a differential equation such as the one for the discharging
of a capacitor.
- The solution to this was found by recognizing
that the derivative of a decaying exponential is the one function
that we know that might satisfy this equation. We were also aided
by the fact that we observed that sort of behavior in the lab.
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| Conceptests: |
Today's
Conceptest
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| Worked Problems: |
None today
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| Links: |
None today
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Assignments: |
Next
Reading Assignment (due 10/1)
Next
Homework (due 10/3)
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Diversion-of-the-week: |
This week's diversion takes a page from
the Bizarre Stuff You
Can Make in Your Kitchen website and it's called the Wonderous
Glowing Pickle. Basically, if you plug a pickle into wall socket,
it glows! (Disclaimer: This is dangerous! If you don't know what you
are doing, you should probably just download the video of this trick!).
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Page last updated on
August 15, 2001.
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