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Hands as
resistors
YOU WILL NEED
+ your timer from Experiment 9
+ 2 long wire connectors
+ 1 capacitor 10 µF
HERE'S HOW
1. Remove the 220-kΩ resistor (R5) and
insert a long wire into each of the
places where its two terminals
were.
2. Take the bare wire ends between
your thumb and forefinger of each
hand and press the pushbutton
with your middle finger (which has
the farthest reach). You will see that
you act like a large resistor.
R1
3.3 kΩ
LED1
A
C
Pb1
R4
R3
470 Ω
100 kΩ
R2
22 kΩ
+
T1
C1 10 µF
Timer Switches
EXPERIMENT 11
+
LED2
A
C
–
R6
470 Ω
T2
31
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