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charge is within, and "wipe" the charge onto the
inner surface of the cup.
•
Use the relationships given below to calculate the
charge that has been transferred.
•
For a capacitor of capacitance C, the relationship
between the charge Q and the voltage U is:
=
⋅
Q
C
U
•
Since U
= U
, the output voltage from the
OUT
IN
electrometer gives a measure of the charge Q :
=
⋅
Q
U
C
OUT
•
The capacitor U8403501 has the known capacitance
C = 10 nF, and therefore the charge can be
calculated.
Elwe Didactic GmbH • Steinfelsstr. 6 • 08248 Klingenthal • Germany •
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany •
Fig. 1
Experiment set-up for measuring charges in electrostatics
Technical amendments are possible
© Copyright 2008 3B Scientific GmbH
www.elwedidactic.com
www.3bscientific.com
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