A 1.10-m-long metal bar is pulled to the right at a steady 5.7 m/sperpendicular

Question

A 1.10-m-long metal bar is pulled to the right at a steady 5.7 m/sperpendicular to a uniform, 0.715-T magnetic field. The bar rides on parallel metal rails connected through R = 24.4-, as shown in the figure(Figure 1) , so the apparatus makes a complete circuit. You can ignore the resistance of the bar and the rails.

A) Calculate the magnitude of the emf induced in the circuit. Express your answer using two significant figures.

B) Calculate the current through the resistor. Express your answer using two significant figures.

Explanation / Answer

A) Emf = vBL = 5.7*0.715*1.1 =4.483 Volt
B) Current = Emf/R = 0.18 Amp

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