2. a) b) Derive Lenz's law from Maxwell's equations. [4] A magnetic induction is piercing through a wire loop of which one of the sides has sliding contacts and can be moved. The adjustable wire is moved at a constant velocity v, as illustrated in the figure above. Explain with reasoning and indicate using a diagram: i) the direction of the induced magnetic induction. [2] ii) the direction of the induced current. [2]