PLMGSS-ACE Li ShiYu's Science Blog

Monday, March 1, 2010

[[Electricity 【Formula】]]

According to Ohm's Law electric potential difference(V) is directly proportional to the product of the current(I) times the resistance(R).

V = I R

P = I V

P = V2 / R

P = I2 R

Resistance of Resistors in Series
The equivalent resistance (Req) of a set of resistors connected in series is
Req = R1 + R2 + R3 + - - -

Resistance of Resistors in Parallel
The equivalent resistance (Req) of a set of resistors connected in parallel is
1/Req = 1/R1 + 1/R2 + 1/R3 + - - -

[[ Branched ]]*|3/01/2010 08:59:00 PM|

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