-If all resistors equal 4.7 kΩ and Vs equals 20 V in Figure 6 -2, what is the value of IR3?
A)12.5 mA
B)1.06 mA
C)0.53 mA
D)11.99 mA

Question

-If all resistors equal 4.7 kΩ and Vs equals 20 V in Figure 6 -2, what is the value of IR3?
A)12.5 mA 
B)1.06 mA 
C)0.53 mA 
D)11.99 mA

Quizplus · Accepted Answer

The circuit is likely a series circuit, so the total resistance is the sum of all resistors. If there are three resistors, the total resistance is 14.1 kΩ (3 x 4.7 kΩ). Using Ohm's Law (I = V/R), the current is 20 V / 14.1 kΩ = 0.53 mA.

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