Answer to Question #248528 in Other for Sai

Question

The resistance (Rn)of an electrical circuit, containing resistors R1,R2,and R3 in parallel is given by

Answer 1

$$\dfrac{1}{R_n}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+\dfrac{1}{R_3}$$

$$\dfrac{1}{R_n}=\dfrac{R_1R_2+R_1R_3+R_2R_3}{R_1R_2R_3}$$

$$R_n=\dfrac{R_1R_2R_3}{R_1R_2+R_1R_3+R_2R_3}$$