An ideal resistor, the resistance value does not change with the voltage or current

In an ideal resistor, the resistance value does not change with the voltage or current, will not change due to the sudden change in current. A real Circuit breaker can not reach this point. Today's interior design the resistor in extreme voltage or current (as well as other environmental factors, such as temperature) can be relatively small changes in resistance.
Each resistor has its electric transformer or current limit (depending on the size of the resistor). If the voltage or current exceeds this range, the resistance Air circuit breaker first resistor changes (in some resistors can have a dramatic change), then the resistor so that the damage due to overheating conditions. Most of the resistor marked nominal electric power, while others will provide the rated current or voltage.