The diagram at right shows a magnet that has Direction of rotation been placed near a wire. When the switch is closed, the magnet is deflected as shown, with the south pole dropping into the page and the north pole coming out AB of it. a) Find the direction that the current must be moving along the wire. Explain your reasoning. b) Which terminal of the battery, A or B,is the positive terminal of the battery? c) Find the direction of the net force exerted by the magnet on the current at the instant shown in the diagram. Explain.