27.38. A thin, 50.0-cm-long Figure 27.51 Exercise 27.39. V metal bar with mass 750 g rests on, but is not attached to, two metallic supports in a uniform 0.450-T magnetic field, as shown in Fig. 27.51. A battery and a 25.0-n resistor in series are con- nected to the supports. (a) What X X X is the highest voltage the battery can have without breaking the circuit at the supports? X X R www B X X X

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2. Answers: 817 V
27.38. A thin, 50.0-cm-long Figure 27.51 Exercise 27.39.
V
R
metal bar with mass 750 g rests
on, but is not attached to, two
metallic supports in a uniform
0.450-T magnetic field, as shown
in Fig. 27.51. A battery and a
25.0-n resistor in series are con-
nected to the supports. (a) What
xxx
is the highest voltage the battery can have without breaking the
circuit at the supports?
B
X X X X X
Transcribed Image Text:2. Answers: 817 V 27.38. A thin, 50.0-cm-long Figure 27.51 Exercise 27.39. V R metal bar with mass 750 g rests on, but is not attached to, two metallic supports in a uniform 0.450-T magnetic field, as shown in Fig. 27.51. A battery and a 25.0-n resistor in series are con- nected to the supports. (a) What xxx is the highest voltage the battery can have without breaking the circuit at the supports? B X X X X X
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