In the figure, a metal rod is forced to move with constant velocity along two pa

Question

In the figure, a metal rod is forced to move with constant velocity along two parallel metal rails, connected with a strip of metal at one end. A magnetic field of magnitude B = 0.372 T points out of the page. (a) If the rails are separated by 18.8 cm and the speed of the rod is 57.6 cm/s, what is the magnitude of the emf generated in volts? (b) If the rod has a resistance of 26.8 and the rails and connector have negligible resistance, what is the current in amperes in the rod? (c) At what rate is energy being transferred to thermal energy?

link to image:

https://drive.google.com/uc?id=0B7UCYCCT8Ll9dHRraWJ0ckFDYWs

Explanation / Answer

a) EMF = Blv = 0.372*0.188*0.576 = 0.040283136 V
b) I = V/R = 0.00150310208955223880597014925373 A
c) E = VI = 6.0549665895317014925373134328358e-5 W

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