Page 176 - Basic Electrical Engineering
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Figure 2.79
When terminals A and B are shorted, terminals C and D are also shorted.
Two 4 Ω resistances are seen connected in parallel across terminals E and F.
The current from the battery of 12 V is
This 6 A will get divided into 3 A each at branch EF and E C A B D F. Thus,
I due to the 12 V battery source is 3 A. I due to the 24 V battery is
SC
SC
calculated by considering the loop DC ABD which is 24/4 = 6 A. Thus, total
I due to both the sources of EMF is 3 + 6 = 9 Amps. The equivalent
SC
resistance of the network across terminals A and B is calculated as (after
short circuiting the sources of EMFs).
Figure 2.80
