A 1 m length of nichrome wire has a resistance of 10.0 .How would you use 1 m of this wire, and a jockey-slide contact, as the variableresistor shown in Fig. 6?Your answer should1. include a diagram showing the wire in use,2. explain how you would achieve smooth changes in the value of the variableresistance,3. explain why the wire must be bare and clean.