Q5: Series and Parallel DC Circuits

Find the voltage Vab across the open circuit in the circuit shown in Fig 5. The 10 ohm resistor has zero current flowing through it because it is in series with an open circuit(Also, it has zero volts across it). Consequently, voltage division can be used to obtain V1. The result is V1 = 100 […]

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Q6 Series and Parallel DC Circuits

Find V1 in the circuit showin in Fig 6. First observe that no current flows in the single wire connecting the two halves of this circuit as is evident from enclosing either half in a closed surface. From KVL applied to the left-hand half of the circuit, 24 = 16I1 + 2V1. And for the […]

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Q7: Series and Parallel DC Circuits

In the circuit shown in Fig 7 find the total resistance RT with terminals a and b (a)open-circuited, and (b) short-circuited. With terminal a and b open, the 20 and 90 ohm resistors are in series, as are 60 and 10 ohm resistors. The two series combinations are in parallel; so RT = (20 + […]

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