It is the material or arrangement that provides opposition to change because of driving force under potential gradient. It is actually constrained parameter as a constant, need not to be a material property. It is made as some intermediate effect between input (Difference or gradient) & output (transfer). For e.g. If there is a heat transfer there must be temperature drop per each unit of transferred rate. If there is an electric current, there must be some voltage drop per each amperage of current. If there is a fluid flow or discharge then there is some pressure drop per each unit.
I numerically understood there is a resistance. But can someone explain what is the cause of resistance
It is the resistance to the conversion of heat energy to electromagnetic energy
It is the material or arrangement that provides opposition to change because of driving force under potential gradient. It is actually constrained parameter as a constant, need not to be a material property. It is made as some intermediate effect between input (Difference or gradient) & output (transfer).
For e.g. If there is a heat transfer there must be temperature drop per each unit of transferred rate.
If there is an electric current, there must be some voltage drop per each amperage of current.
If there is a fluid flow or discharge then there is some pressure drop per each unit.