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In the circuit shown in the figure, X is an element which always absorbs power during a particular operation it sets up a current of 1 amp in the direction shown and absorbs a power Px. It is possible that X can absorb the same power Px for another current I. the value of this current is
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- (3 – √14) amps
- (3 + √14 amps
- 5 amps
- none of these
Correct Option: D
As element absorbs power, let it be Rx.
| i = 1 = | ||
| Rx + 1 |
⇒ Rx = 5 Ω
| P = |  |  | 2 | × 5 = 5 W | |
| 6 |
For 5A, P = 52 × 5 = 125 W
For 3 + √14, P = 227 W
For 3 – √14, P = 2.75 W
Hence none of the above is correct.
