Current Electricity
Class 12 · Current Electricity

Series Circuit

R_t = ΣRᵢ. Same I. V splits in proportion to each R.

Run simulation

Key Notes

01

Same current I flows through all components.

02

Voltage divides: V_total = ΣV_i = I·ΣR_i.

03

R_eq = ΣR_i — total is sum.

Formulas

Series

Direct addition.

Important Points

If one element opens (breaks), entire circuit stops.

Voltage divider rule: V_i = V_total · R_i / R_eq.

Series 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.