The figure(Figure 1) shows a zero-resistance rod sliding to the right on two zero-resistance rails separated by the distance L = 0.519m . The rails are connected by a 12.1? resistor, and the entire system is in a uniform magnetic field with a magnitude of 0.690T
Find the force that must be exerted on the rod to maintain a constant current of 0.138A in the resistor.
What is the rate of energy dissipation in the resistor?
What is the mechanical power delivered to the rod?