Question

equvilant resistance
please tell ans ​

Answer 1

In parallel

$\boxed{\sf \dfrac{1}{R}=\dfrac{1}{R_1}+\dfrac{1}{R_2}\dots}$

$\\ \sf\longmapsto \dfrac{1}{R}=\dfrac{1}{1}+\dfrac{1}{2}+\dfrac{1}{3}+\dfrac{1}{4}$

$\\ \sf\longmapsto \dfrac{1}{R}=\dfrac{12+6+4+3}{12}$

$\\ \sf\longmapsto \dfrac{1}{R}=\dfrac{25}{12}$

$\\ \sf\longmapsto R=\dfrac{12}{25}$

$\\ \sf\longmapsto R=0.4\Omega$

In series:-

$\\ \sf\longmapsto R=R_1+R_2$

$\\ \sf\longmapsto R=0.4+0.6$

$\\ \bf\longmapsto R=1\Omega$