A 3 V dc supply with an internal resistance of 2 Ω supplies

Home » Electric Circuits » Electric circuits miscellaneous » Question

A 3 V dc supply with an internal resistance of 2 Ω supplies a passive non-linear resistance characterized by the relation V_NL = I² _NL. The power dissipated in the non-linear resistance is

1. 1.0 W
2. 1.5 W
3. 2.5 W
4. 3.0 W

Correct Option: A

Here, 3 = 2I + I²
⇒ I = 1A
V_NL = 1V
∴ Power = 1 × 1 = 1W