Ohms Law
We can see in this picture Ohm’s law states that the voltage v across a resistor is directly proportional to the current i flowing through the resistor. We can see in this picture:
Ohms Law Formula: V=IR
The value of R 0 to infinite but we can use only the ohms law in linear resistor.
In Short circuit is when there is no resistance
between two points. When this happens, current will be at maximum
because the is very little to limit the flow of charge.
In Open circuit is the opposite, when resistance is very high and there is no flow of current.
Reciprocal of resistance R, known as conductance and denoted by G:
Reciprocal of resistance R, known as conductance and denoted by G:
Conductance(G) - Siemens (S)
G=I/R
Power
P=iv ---> i(iR) = i^2Ewatts
---> (v/R)v=v^2/R watts
R and G are positive quantities thus power is always positive.
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