Figure P25 is a representation of an electrical system with a power supply and a load. The power supply produces the fixed voltage υ₁ and supplies the current i₁ required by the load, whose voltage drop is υ₂. The current voltage relationship for a specific load is found from experiments to be

 

Suppose that the supply resistance is R₁ = 30Ω and the supply voltage is υ₁ = 15 V. To select or design an adequate power supply, we need to determine how much current will be drawn from the power supply when this load is attached. Find the voltage drop υ₂ as well.

Figure P25

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iį = 0.16(e0.120, – 1)