Linear system obeys reciprocity theorem and principle of maximum power transfer

Reciprocity Theorem:
The reciprocity theorem states that the ratio of the response in one port due to excitation in another port is the same as the ratio of the response in the second port due to excitation in the first port. This means that if we interchange the inputs and outputs of a linear system, the response will remain the same.

Principle of Maximum Power Transfer:
The principle of maximum power transfer states that the maximum power is transferred from a source to a load when the impedance of the load is equal to the conjugate of the impedance of the source. This means that the load should be matched to the source for maximum power transfer.

Both the reciprocity theorem and principle of maximum power transfer are applicable to linear systems.

Linear systems are those systems in which the output is directly proportional to the input. These systems can be represented by linear equations and exhibit properties such as superposition, homogeneity, and additivity.

In summary, linear systems obey both reciprocity theorem and principle of maximum power transfer. The reciprocity theorem states that the response of a system is the same regardless of input and output port interchange while the principle of maximum power transfer states that the maximum power is transferred when the load impedance is matched to the conjugate of the source impedance.