Question: A 2.90-N metal bar, 1.75 m long and having a resistance of 10.0 ohms, rests horizontally on conducting wires connecting it to the circuit shown in the figure. The bar is in a uniform, horizontal, 1.55-T magnetic field and is not attached to the wires in the circuit.
a) What is the magnitude of the acceleration of the bar just after the switch S is closed?
b) What is the direction of the acceleration of the bar just after the switch S is closed?
