1445326735900-0

Starting electronics
Figure 3.4 shows a further simplification.
Figure 3.4 The network simplified into a string of series resistances (network I)
Network I
Resistance R I
is found by adding resistances of resistors R 1
,
R H
and R G
. Resistance R I
is therefore 22k02.
Figure 3.5 shows the next stage of simplification with two
unequal parallel resistors. The whole network’s equivalent
resistance is therefore given by:
Now, from Ohm’s law we may calculate the current I, flowing
from the battery, using the expression:
58