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Prob 9-4 Fig 9-78 solved

# Prob 9-4 Fig 9-78 solved - For Ib due to the-60 V source...

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Prob 9-4 Fig 9-78 Using superposition find the current through the 480 ohm resistor. There are three sources so we must solve the circuit for each of the three sources. We should assume the current goes to the right as that is consistent with all three sources. For Ia due to the +200 V source: open the current source and set the -60 V source to 0 V. Ia = 200/(120 + 480) = 200/600 = 0.333 A
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Unformatted text preview: For Ib due to the -60 V source: open the current source and set the +200 V source to 0 V. Ib = 60/(120 + 480) = 60/600 = 0.1 A For Ic due to the 200 mA source set the +200 V and the -60 V sources to 0 V Using I div: Ic = 0.2 *120/(120+480) = 0.2*120/600 = 0.2*0.2 = 0.04 A I = Ia + Ib + Ic = 0.333 + 0.100 +0.040 = 0.473 A = 473 mA...
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