# Solved Problems-11

Problems-11
In the network shown, the power dissipated in R when E1E2 or E3 acting alone is
1. 20 W, 80 W, and 5 W respectively.
2. 30 W, 270 W, and 120 W respectively.

Calculate the maximum power that R can dissipate due to the simultaneous action of all the sources. Calculate both for (a) and (b).

What will be the minimum power dissipated in R when all the sources are acting simultaneously?

Solution
Current for E1 at R

Current for E2 at Ri2 = Â±

Current for E3 at Ri3 = Â±

âˆ´ Total current flow for simultaneous action of all the three sources is,

âˆ´
• For maximum power,
Pmax =
1. Pmax =
2. Pmax =
• For minimum power,
1. Pmin =
2. Pmin =