Question

How to Solve Any series and parallel circuit ,please?

Answer 1

Answer

If resistors are connected in series ,

$\bf \pink{\bigstar\ \; R_{eq}=R_1+R_2+R_3+...}$

If resistors are connected in parallel ,

$\bf \green{\bigstar\ \; \dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+\dfrac{1}{R_3}+...}$

More Info

If "n" equals resistors are connected in series ,

$\bf R_{eq}=R_1+R_2+R_3+...+R_n\\\\\implies \bf \red{R_{eq}=nR}$

If "n" equals resistors are connected in parallel ,

$\bf \dfrac{1}{R_{eq}}=\dfrac{1}{R_1}+\dfrac{1}{R_2}+\dfrac{1}{R_3}+...+\dfrac{1}{R_n}\\\\\implies \bf \dfrac{1}{R_{eq}}=\dfrac{n}{R}\\\\\implies \bf \blue{R_{eq}=\dfrac{R}{n}}$