Question

Two resistors of 10 and 15 n are connected. What is their combined resistance if they are connected: a) in series b) in parallel?​

Answer 1

Explanation:

Given that,

Two resistors of 10 ohms and 15 ohms are connected.

In series combination, the equivalent resistance is given by :

$R_s=R_1+R_2\\\\R_s=10+15\\\\R_s=25\ \Omega$

In parallel combination, the equivalent resistance is given by :

$\dfrac{1}{R_p}=\dfrac{1}{R_1}+\dfrac{1}{R_2}\\\\\dfrac{1}{R_p}=\dfrac{1}{10}+\dfrac{1}{15}\\\\R_p=6\ \Omega$

Hence, this is the required solution.