2. An applied force causes a conducting bar to move along frictionless conducting rails connected to a 4.00 £2 resistor as shown below. The length of the bar is 1.60 m and a uniform magnetic field of 1.50 T is present pointing out of the page. The conducting bar moves at a constant speed of 6.00 m/s. y=6.00 m/s 1.60 m 4.002 Q 1.20 m 1.50 m a) Calculate the flux through the loop formed by the resistor, rails, and conducting bar at the moment shown above. Show your calculation. b) Calculate how long it will take the bar to move to the location shown below and calculate the new flux value for the loop. Show your calculation. 6.00 m/s F 2.70 m 3a 4.00 www www
c) Calculate the magnitude and state the direction of the induced current due to the change in flux. Show your calculation. d) Calculate the magnitude and state the direction of the magnetic force exerted on the induced current flowing through the conducting bar. Show your calculation. e) In a sentence, explain why the applied force must have the same magnitude as the magnetic force calculated in part d. f) Calculate the work done by the applied force moving the bar between the two positions shown above. Show your calculation.
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