A conducting rod of length { moves on two horizontal frictionless rails, as in the figure below. A constant force of magnitude 1.50 N moves the bar at a uniform speed of 2.25 m/s through a magnetic field B that is directed into the page. X X X X X x Fapp X X X X X X (a) What is the current in an 7.50 Q resistor R? X Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error. A (b) What is the rate of energy dissipation in the resistor? 3.3748 W (c) What is the mechanical power delivered by the constant force? 3.375 W Need Help? Read It