1. In two sentences, compare magnetism to electricity. Cite at least two properties. 2. Materials made of iron respond to magnets and in turn can also attract or repel other ferromagnetic materials. Write at least two sentences explaining why this is so? 3. What will happen to the magnetic force exerted on currentcarrying wire if the current in the wire increases? 4. What is the effect of increasing the length of the wire and the strength of the magnetic field to the magnetic force exerted on a currentcarrying wire