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Figure 4.1
For convenience of measurements the button-key K is served
1
for short connecting the galvanometer in the circuit. Ballast resistance
R limits current in galvanometer. Instead of battery E (the principle
b
scheme) the voltage rectifier (power supply) of 6V is used.
By rheostat R we may change current in rheochord AB .
All elements of wiring scheme are disposed on the laboratory
bench (Fig.4.2). There's an example of compensation testing battery of
unknown electromotive force .
x
Figure 4.2
37
