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Laboratory measurements on a dc voltage source yield a terminal voltege 75V with no load connected to the source and 60V when loaded with a 20 Ohm resistor.
A)what is the thevenin equivalent with respect to the terminals of dc voltage source ?
B)show that thevenin resistance of the source given by the expressio
Rth=[(Vth/Vzero) - 1] x Rl
Vzero is terminal voltage corresponding to the load resistance Rl
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