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## Parallel circuits

In the circuit below, three resistors of resistance R1, R2, and R3 are connected in parallel.

It has the following characteristics.

1- All the resistors connected in parallel have the same potential difference across them.

2- As there are different paths for the current therefore there will be different values of current for each resistor, given by I1, I2 & I3 respectively such that the total current I is given by

I1 = I1+ I2 + I3

The equivalent resistance R of the combination of a parallel circuit is always than the least resistance of the parallel combination and is given by

1/R = 1/R1 + 1/R2 + 1/R3

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