9. Find the load impedance Z₁ for the networks in Fig. for maximum power to the load, and find the maximum power to the load. (answer: = 2.48N+j5.15N, 309.135 W) R₁ 3 Ω E₁100 V20⁰ voo 4Ω + ZL voo 9Ω Xc822 R₂ 120 + E₂200 V Z 90°

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Maximum power transfer theorem

A resistive load will consume maximum power from a network when the load resistance is equal to the resistance of the network as viewed from the open-circuit terminals, with all energy sources removed leaving only the internal resistances. Physicist Moritz von Jacobi introduced the maximum power transfer theorem in 1940. Therefore, this theorem is also known as Jacobi's law.