1 answer

Thevenin's theorem. (QMC). Calculate the currents and /2 in the circuit of figure 2.21. Calculate also...

Question:

Thevenins theorem. (QMC). Calculate the currents and /2 in the circuit of figure 2.21. Calculate also the potential difference across the current source and indicate its sign 10Ω 20Ω 1A Fig. 2.21

Thevenin's theorem. (QMC). Calculate the currents and /2 in the circuit of figure 2.21. Calculate also the potential difference across the current source and indicate its sign 10Ω 20Ω 1A Fig. 2.21

Answers

10Ω 20Ω 20Ω 30Ω 1A 1A Fig. 2.21 B 20Ω 30Ω

VA = electric potential at A = 6 Volts

VB = electric potential at B = 1 x 20 = 20 Volts

Thevenin Voltage is given as

VBA = VB - VA = 20 - 6 = 14 Volts

Thevenin equivalent resistance is given as

Rt = 30 ohm

current through 10 ohm resistor is given as

i = VBA /(Rt + R) = 14/(30 + 10) = 0.35 A

at node B ,

i = i1 + i2

1 = 0.35 + i2

i2 = 0.65 A

.

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