Add the fractions on the right side of the equals sign to obtain a single fraction for the application formula. Assume there are no zero denominators. Resistors in parallel in an electrical circuit: $$\frac { 1 } { R } = \frac { 1 } { R _ { 1 } } + \frac { 1 } { R _ { 2 } }$$
A) $\frac { 1 } { R } = \frac { 1 } { R _ { 1 } + R _ { 2 } }$
B) $\frac { 1 } { R } = \frac { R _ { 2 } + 1 } { R _ { 1 } R _ { 2 } }$
C) $\frac { 1 } { R } = \frac { R _ { 2 } + R _ { 1 } } { R _ { 1 } R _ { 2 } }$
D) $\frac { 1 } { R } = \frac { 1 + R _ { 1 } } { R _ { 1 } R _ { 2 } }$
E) $\frac { 1 } { R } = \frac { 1 } { R _ { 1 } R _ { 2 } }$

Question

Quizplus · Accepted Answer

To add the fractions $\frac{1}{R_1}$ and $\frac{1}{R_2}$, you find a common denominator, which is $R_1R_2$, and then add the numerators, resulting in $\frac{R_2 + R_1}{R_1R_2}$.

Add the Fractions on the Right Side of the Equals 1R=1R1+1R2\frac { 1 } { R } = \frac { 1 } { R _ { 1 } } + \frac { 1 } { R _ { 2 } }R1​=R1​1​+R2​1​

Add the Fractions on the Right Side of the Equals $\frac { 1 } { R } = \frac { 1 } { R _ { 1 } } + \frac { 1 } { R _ { 2 } }$