A balanced ac bridge has the following constants: AB, R-50002; BC, R-100002; CD, unknown; DA, C-0.2µF. A voltage of 10V at 1000Hz is impressed on the bridge at points A and a) Find the constants of the unknown. b) The 10000 resistor is changed to 100202. Find the voltage across the high- impedance. detector.

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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.