2.2. A single-phase load is supplied with a sinusoidal voltage v(t) = 200 cos (377t) The resulting instantaneous power is p(t) = 800 + 1000 cos(754t – 36.87°) (a) Find the complex power supplied to the load. (b) Find the instantaneous current i(t) and the rms value of the current sup- plied to the load. (c) Find the load impedance.

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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.