Electricity

Voltage in a Parallel Circuit.

1.  The voltage in a parallel circuit is the same for all branches.

V₁ = V₂ = V₃.

2.  The voltage for each branch is the same as the supply voltage.

V₁ = V₂ = V₃= V_sup.

If an identical cell (battery) is placed in parallel with the original cell
the voltage stays the same.
The two cells together provide electricity for twice as long
before they run out.
See also cells in series.

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