In a region with a constant magnetic field as X > Applied right so that the distance s increases with time. x X j x X )( In Questions #8-10, we will determine what l i S Lenz' Law tells us about this situation. To this point, our answers have been qualitative. In the next two questions, we will use Faraday's Law to quantify this. 12. Determine the magnetic flux through the loop when the bar is at a distance s to the right. 13. Use Faraday's Law to d etermine the magnitude of the induced emf in the loop. You may assume that the bar is moving at a speed v at that instant. 14, Determine the magnitude of the current passing through the resistor at that same instant. 15. Determine the rate at which energy is delivered to the resistor at that instant. The energy being delivered to the resistor must come from somewhere. Let's examine energy conservation in the specific case that the speed of the bar is constant. 16. You could easily now be asking vourself "How could the speed of the bar possibly be constant when there is a force pulling it to the right and the rails are frictionless?" That is a very legitimate question. Since there is a current in the bar, that current will experience a force from the magnetic field. Determine its magnitude and direction. 17. If the bar really is moving at a constant speed, then how large is the applied force? 18. Determine the power supplied by whoever or whatever is pulling the bar. Is your answer consistent with vour answer to Question #15? Explain