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

Question 38

Multiple Choice

Use the formula 1R=1R1+1R2+1R3\frac { 1 } { R } = \frac { 1 } { R _ { 1 } } + \frac { 1 } { R _ { 2 } } + \frac { 1 } { R _ { 3 } } . Given R=75ΩR = 75 \Omega , R1=165ΩR _ { 1 } = 165 \Omega  and R2=275ΩR _ { 2 } = 275 \Omega Find R3R _ { 3 } .


A) R3=225ΩR _ { 3 } = 225 \Omega
B) R3=365ΩR _ { 3 } = 365 \Omega
C) R3=210ΩR _ { 3 } = 210 \Omega
D) R3=275ΩR _ { 3 } = 275 \Omega
E) R3=259ΩR _ { 3 } = 259 \Omega

Correct Answer:

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