College Physics 10th Edition by Raymond Serway,Chris Vuille

Exercise 81

A conducting rod of length moves on two horizontal frictionless rails, as in Figure P20.30. A constant force of magnitude 1.00 N moves the bar at a uniform speed of 2.00 m/s through a magnetic field that is directed into the page. (a) What is the current in an 8.00- resistor R (b) What is the rate of energy dissipation in the resistor (c) What is the mechanical power delivered by the constant force