Chapter 30, Problem 029 Inthefigure, a metara separat move atisthe current pe am

Question

Chapter 30, Problem 029 Inthefigure, a metara separat move atisthe current pe amperes in therod?(c)At d 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 0.494 T points out of the page. (a) If the rails are separated by 33.9 cm and the speed of the rod is 53.0 cm/s, what is the magnitude of the emf generated in volts? (b) If the rod has a resistance of 15.6 ? 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? I. (a) Number b) Number (c) Number Click if you would like to Show Work for this question: Units Units Units Open Show Work Question Attempts: 0 of 5 used SAVE FOR LATER SUBMIT ANSWER SUBMIT ANSWER

Explanation / Answer

a) ?=Blv = (0.494T)*(0.339m)*(0.53m/s) = 0.0887 V = 88.7 mV

b) I = ?/R = 0.887V/15.6? = 0.00568A = 5.68mA

c) P=W/?t = I2R = 0.005682*15.6 = 0.5*10^-3 J = 0.5 mJ

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