An R, of 30 W, and an R, of 10 W are connected in series, and they are connected in parallel with an R3 of 40 W, and are finally connected in series with an R, of 40 W across the 12 V power line as shown in figure 7. How much is the total line current I-? R1 R2 102 302 w- R3 402 R4 202 12V

An R, of 30 W, and an R, of 10 W are connected in series, and they are connected in parallel with an R3 of 40 W, and are finally connected in series with an R, of 40 W across the 12 V power line as shown in figure 7. How much is the total line current I-? R1 R2 102 302 w- R3 402 R4 202 12V

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter28: Current And Resistance

Section: Chapter Questions

Problem 70PQ

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Question

100%

An R, of 30 W, and an R, of 10 W are connected in
series, and they are connected in parallel with an R3 of
40 W, and are finally connected in series with an R, of
40 W across the 12 V power line as shown in figure 7.
How much is the total line current l-?
R2
102
R1
302
R3
402
R4
202
12V

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