Tellegen's theorem applies to any lumped network satisfying Kirchhoff's laws, meaning it can be used for a variety of circuit types regardless of their linearity or time-invariance. Therefore, the correct answer is c) Any lumped network satisfying Kirchhoff's laws.
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Tellegen's theorem is a fundamental theorem in network theory, which is a part of electrical engineering. This theorem provides a powerful tool for analyzing electrical circuits and networks.
Tellegen's theorem applies to:
c) Any lumped network satisfying Kirchhoff's laws ;