Figure 27-49 shows a section of a circuit. The resistances
Chapter , Problem 38(choose chapter or problem)
Figure 27-49 shows a section of a circuit. The resistances are R1 ! 2.0 0, R2 ! 4.0 0, and R3 ! 6.0 0, and the indicated current is i ! 6.0 A. The electric potential difference between points A and B that connect the section to the rest of the circuit is VA # VB ! 78 V. (a) Is the device represented by Box absorbing or providing energy to the circuit, and (b) at what rate?A BiR1R2R3Figure 27-49 38.
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