2010000805 | math4u.vsb.cz

SubArea:

Polynomials and fractions

Level:

Project ID:

2010000805

Source Problem:

Accepted:

0

Clonable:

1

Easy:

0

In a parallel circuit the total resistance

R

of three components with the resistances

R_{1}

,

R_{2}

,

R_{3}

is given by the formula

\frac{1}{R} = \frac{1}{R_{1}} + \frac{1}{R_{2}} + \frac{1}{R_{3}}

. Express

R_{2}

from this formula.

R_{2} = \frac{R R_{1} R_{3}}{R_{1} R_{3} - R (R_{1} + R_{3})}

R_{2} = \frac{R - R_{1} - R_{3}}{R R_{1} R_{3}}

R_{2} = R - \frac{R_{1} R_{3}}{R_{1} + R_{3}}

R_{2} = \frac{R_{1} R_{3} - R (R_{1} + R_{3})}{R R_{1} R_{3}}