Parallel Resistance (1/Req = sum of reciprocals (parallel))

jee-mainjee-advancedneet-ug

1/Req = sum of reciprocals (parallel)

What each symbol means

SymbolWhat it stands for
R_iBranch resistances sharing same pair of nodes (Ω)
R_{\mathrm{eq}}Equivalent resistance (Ω)

When to use this

Two ideal nodes; same V across each branch; DC steady state.