Chapter 22, Problem 07 GO Refer to the drawing that accompanies Check Your Under

Question

Chapter 22, Problem 07 GO Refer to the drawing that accompanies Check Your Understanding Question 14. Suppose that the voltage of the battery in the circuit is 2.2 V, the magnitude of the magnetic field (directed perpendicularly into the plane of the paper) is 1.1 T, and the length of the rod between the rails is 0.30 m. Assuming that the rails are very long and have negligible resistance, find the maximum speed attained by the rod after the switch is closed. Rod B (into paper) xxXXXx Switch Conducting rail Number Units

Explanation / Answer

emf = E = 2.2 V

MAGNETIC FIELD = B = 1.1 T

length = l = 0.3 m

     e = v B L

velocity = v = e / B L =2.2 / 0.33 = 6. 67 m/sec

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