Series and Parallel Circuits

A circuit in which the components are connected end-to-end, so that the current flows through each component in turn.

A circuit in which the components are connected across common points or junctions, providing multiple paths for the current.

R_eq = R1 + R2 + R3 + ... + Rn

1/R_eq = 1/R1 + 1/R2 + 1/R3 + ... + 1/Rn

The total current decreases as more resistors are added.

The total current increases as more resistors are added.

V = I * R, where V is voltage, I is current, and R is resistance.

Higher resistance results in lower current for a given voltage.

Ohm (Ω)