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Use the Formula 1R=1R1+1R2+1R3+1R4\frac { 1 } { R } = \frac { 1 } { R _ { 1 } } + \frac { 1 } { R _ { 2 } } + \frac { 1 } { R _ { 3 } } + \frac { 1 } { R _ { 4 } }

Question 137

Multiple Choice

Use the formula 1R=1R1+1R2+1R3+1R4\frac { 1 } { R } = \frac { 1 } { R _ { 1 } } + \frac { 1 } { R _ { 2 } } + \frac { 1 } { R _ { 3 } } + \frac { 1 } { R _ { 4 } } . Given R=155ΩR = 155 \Omega , R1=605ΩR _ { 1 } = 605 \Omega , R3=765ΩR _ { 3 } = 765 \Omega and R4=1,350ΩR _ { 4 } = 1,350 \Omega Find R2R _ { 2 } .


A) R2=250ΩR _ { 2 } = 250 \Omega
B) R2=170ΩR _ { 2 } = 170 \Omega
C) R2=264ΩR _ { 2 } = 264 \Omega
D) R2=230ΩR _ { 2 } = 230 \Omega
E) R2=364ΩR _ { 2 } = 364 \Omega

Correct Answer:

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