Fundamentals of Electronic Technology (III)__ Chapter 1 resistance of parallel circuit

The resistance of parallel circuit is the basis of circuit analysis , It's a point , Must master .

See the following figure ：

It's a law , It's a formula .  There is   , That is, the equivalent resistance is always less than the resistance in any parallel connection .

Pay attention to this concept ： The reciprocal of resistance is called conductance G, It shows the conductivity of the resistive element . The unit of conductivity is Siemens , Abbreviation West (S). 

For the parallel connection of two resistors , Yes

, Equivalent resistance  ,

Total resistance

 

The distribution relationship of current is