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

question 141

Multiple Choice

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

• A) \(R _ { 1 } = \frac { R _ { 2 } } { R _ { 2 } - R }\)
• B) \(R _ { 1 } = \frac { R _ { 2 } - R } { R _ { 2 } }\)
• C) \(R _ { 1 } = \frac { R R _ { 2 } } { R _ { 2 } - R }\)
• D) \(R _ { 1 } = \frac { R } { R _ { 2 } - R }\)

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