Question

derive the formula for series combination Rs equal to R1 + R2 + R3 ​

Answer 1

Hi mate the step follows

In series i is same

V is different

V=v1+V2+v3

V=ir ohms law

Ir=ir1+ir2+ir3

I is same

Ir= i (R1+R2+R3)

I and i get cancelled

R=R1+R2+r3