ANSWER:
a.
80 ohms
b.
50 volts
c.
ER1 = 40 V, ER2 = 30 V, ER3 = 50 V
A practical application of the laws of DC series circuits is
demonstrated in the study of batteries. A battery is made up of two
or more cells which may be connected in series, parallel, or series-
parallel combinations. This lesson is concerned with the series
configuration only.
When connecting cells to form a battery, the voltage and current
requirements for the particular application determine the method of
connection. The advantage of connecting cells in series is that a
higher output voltage is obtained. The voltage law for a series
circuit states that the sum of the voltage drops around a closed
circuit is equal to the applied voltage, or
Et, = E1 + E2 + E3
Therefore, when battery cells are connected in series, the total
voltage is equal to the sum of the cell voltages, as shown below.
1-25
IT0334
Previous Page
