The figure shows a zero-resistance rod sliding to the right on two zero-resistance rails separated by the distance L = 0.43 m . The rails are connectedby a 11.3-Ω resistor, and the entire system is in a uniform magnetic field with a magnitude of 0.740 T.
(a) Find the speed at which the bar must be moved to produce a current of 0.135 A in the resistor.
(b) Would your answer to part A change if the bar was moving to the left instead of to the right?
