The current – voltage characteristic of an electric device is as shown in figure (b). The device gets damaged if power dissipated in it exceeds 1 Watt. This device is connected to a dc source of variable emf (V) and a resistance `(R = 100 Omega)` in series. What is possible range of V for which the device remains operational (i.e. consumes some power) and safe.
![image](https://learnqa.s3.ap-south-1.amazonaws.com/images/16128966894913373261612896689.png)