3. Magnetism a. A charge of -1.2C is shot at 10,000m/s in the negative x-direction, passing through a magnetic field of 4T that points in the y-direction. How much force acts on the charge? And in what direction does this force point? b. A magnet with its North end facing downward is dropped through a large conducting loop. As viewed from above, which way will the induced current through the loop flow? (Explain how you get this result.) c. Two wires carry currents as shown below. Determine where there will be zero magnetic field? 24 4A d. From the diagram below, what will be the total magnetic field at the center of the current carrying loop? 24 , R = 1.S m