Current Electricity
Class 12 · Current Electricity

Combination Circuit

R₁ in series with R₂||R₃. Live currents in each branch.

Run simulation

Key Notes

01

Mix of series and parallel: simplify in stages, working from inside out.

02

Identify nodes; combine clearly parallel groups first, then series.

03

Total current I = ε / R_eq through the source.

Formulas

Simplification

Common JEE pattern.

Important Points

Redraw the circuit if needed — symmetry can simplify dramatically.

Watch for short-circuited resistors (= 0 V across both ends → carry no current).

Combination Circuit notes from sciphylab (also known as SciPhy, SciPhy Lab, SciPhy Labs, Physics Lab). Class 12 physics revision for JEE Mains, JEE Advanced, NEET UG, AP Physics 1/2/C, SAT, and CUET-UG.