-If R1 = 4.7 kΩ, R2 = 3.3 kΩ, R3 = 1 kΩ and Vs = 50 V in Figure 6 -1, IT equals .
A)12.1 mA
B)75.7 mA
C)9.15 mA
D)8.8 mA

Question

-If R1 = 4.7 kΩ, R2 = 3.3 kΩ, R3 = 1 kΩ and Vs = 50 V in Figure 6 -1, IT equals .
A)12.1 mA 
B)75.7 mA 
C)9.15 mA 
D)8.8 mA

Quizplus · Accepted Answer

The total resistance in series is R1 + R2 + R3 = 4.7 kΩ + 3.3 kΩ + 1 kΩ = 9 kΩ. Using Ohm's Law, IT = Vs / Total Resistance = 50 V / 9 kΩ = 5.56 mA. However, if the resistors are in parallel, the total resistance would be calculated differently, leading to a different current value.