Ye olde capacitor 8.3
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Transcript of Ye olde capacitor 8.3
Today & Beyond
Quiz Material on Capacitors not in the unit. Complete the unit (9)
SPRING BREAK
RETURN Monday – Begin Unit on Magnetism. (Bring to
class) Wednesday – EXAMINATION #2 / Bring in units
4-9 / Lab Reports Due. Friday – Continue magnetism unit.
What is the current through the 4- resistor in this circuit?
a) 0.67 A
b) 0.75 A
c) 1.0 A
d) 1.5 A
e) 4.5 A
Text Answer
We can measure the C of a capacitor (later)
C0 = Vacuum or air Value
C = With dielectric in place
C=C0
Recall the experiment –
Voltage across C seemed to drop rather than stay stable.
You were given a second capacitor and it held it’s value.
What’s going on??? meters have resistors of 1-10M
14
A Thunker
Find the equivalent capacitance between points a and b in the combination of capacitors shown in the figure.
V(ab) same across each