Series & Parallel
Interactive simulation — adjust parameters and watch the visualization update in real time.
How it works
Compare equivalent resistance and currents for the same two resistors: in series they add (larger R, smaller current); in parallel the equivalent resistance is smaller than either branch, so the battery supplies more total current while each branch sees the full voltage V.
Key equations
R_s = R₁ + R₂, I_s = V / R_s
1/R_p = 1/R₁ + 1/R₂, I_tot = V/R_p, I₁ = V/R₁, I₂ = V/R₂