Question

the resistance in a particular kind of circuit is found using this formula: $\frac{r1r2}{r1 + r2}$. assuming all the variables are non - zero, which line of code will find the value of the resistance? resistance = r1(r2)/(r1 + r2) resistance = r1(r2)/(r1 + r2) resistance = (r1 * r2)/(r1 + r2) resistance = r1(r2)/r1 + r2

Explanation:

Step1: Analyze the formula

The formula for resistance is $\frac{R1\times R2}{R1 + R2}$. In code, multiplication is usually represented by the * symbol.

Step2: Check each option

The first two options write R1(R2) which is not the correct way to represent multiplication in code. The fourth option resistance = R1(R2)/R1 + R2 has incorrect order of operations as it will divide R1R2 by R1 first and then add R2 instead of dividing by R1 + R2. The correct way to write it in code is resistance = (R1 R2)/(R1 + R2).

Answer:

resistance = (R1 * R2)/(R1 + R2)