x x * x * T * X X Problem 8) Objective: Relate work done to produce motional emf to the power dissipated in a circuit. C

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X X X T X X Problem 8 Objective Relate Work Done To Produce Motional Emf To The Power Dissipated In A Circuit C 1 (99.91 KiB) Viewed 44 times

x x * x * T * X X Problem 8) Objective: Relate work done to produce motional emf to the power dissipated in a circuit. Consider the circuit consisting of two parallel, B horizontal wire rails separated by 25 cm, a х м x resistor of 0.25 12 on segment PQ P perpendicular to the rails, and a metal rod MN x X also perpendicular to the rails that is free to 25 cm 5.0 m/s 0.25 12 slide horizontally. The whole system is placed x 1 x X X x in a region of a uniform, constant magnetic field directed into the page of strength 0.75 T. X The resistance in the rod and rails is negligible XNX X compared to the resistor. If the rod is pushed to the right at a speed of 5.0 m/s: a) What is the emf induced in the rod when it is moving to the right? (Include its direction, i.e. which way would current flow along the rod?) owo XOX Х X X b) What is the force (magnitude and direction) required to keep the rod moving at this speed? c) What is the rate at which work is done on the rod by this force? d) What is the power dissipated in the resistor?