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Suppose that an external force of 10 N directed toward the top of the page is applied to the bar as shown in Figure P15.23. In steady state, is the machine acting as a motor or as a generator? Find the power supplied by or absorbed by: a. the electrical voltage source VT. b. RA. c. the external force.

Frictionless rails
Uniform field directed
out of page B= 1.3 T
10 N
Sliding bar
0.75 m-
1=0
R=0.12
Vr = 5
Figure P15.23

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