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Solve the Equation for the Specified Variable 1R=1R1+1R2\frac { 1 } { R } = \frac { 1 } { R _ { 1 } } + \frac { 1 } { R _ { 2 } } \quad

Question 141

Multiple Choice

Solve the equation for the specified variable.
- 1R=1R1+1R2\frac { 1 } { R } = \frac { 1 } { R _ { 1 } } + \frac { 1 } { R _ { 2 } } \quad for R1R _ { 1 }


A) R1=R2R2RR _ { 1 } = \frac { R _ { 2 } } { R _ { 2 } - R }
B) R1=R2RR2R _ { 1 } = \frac { R _ { 2 } - R } { R _ { 2 } }
C) R1=RR2R2RR _ { 1 } = \frac { R R _ { 2 } } { R _ { 2 } - R }
D) R1=RR2RR _ { 1 } = \frac { R } { R _ { 2 } - R }

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