Net resistance in a circuit refers to the overall resistance of the entire circuit, taking into account all the individual resistances of the components connected in series or parallel. It is measured in ohms (Ω).
In a series circuit, the net resistance is calculated by adding together all the individual resistances of the components. This can be represented by the formula Rnet = R1 + R2 + R3 + ..., where R1, R2, R3, etc. are the individual resistances.
In a parallel circuit, the net resistance is calculated using the formula 1/Rnet = 1/R1 + 1/R2 + 1/R3 + ..., where R1, R2, R3, etc. are the individual resistances. This formula takes into account the fact that the total current is divided between the parallel branches, resulting in a lower overall resistance.
Yes, the net resistance affects the flow of current in a circuit. The higher the net resistance, the lower the current will be, according to Ohm's law (I = V/R). This means that as the net resistance increases, the voltage must also increase to maintain the same level of current.
Temperature can affect the net resistance in a circuit, especially in the case of resistors. As the temperature increases, the resistance of a resistor also increases. This means that the net resistance of the circuit will increase, resulting in a decrease in current flow. However, some components, such as thermistors, have a negative temperature coefficient, meaning their resistance decreases as temperature increases.
