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The dependent source in fig. shown below—
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- delivers 80 W
- delivers 40 W
- absorbs 40 W
- absorbs 80 W
Correct Option: A
Let Vx be the voltage a cross dependent source KCL at node A, we get
| + | = | |||||
| 5 | 5 | 5 |
| or | + | = | (∵ V1 = 20 V) | |||
| 5 | 5 | 5 |
| or Vx = | = 4 = + ve | 5 |
It means power is delivered by the dependent source, and is given as
| P = Vx . | = 20 × | = 80 W. | ||
| 5 | 5 |
