FIGURE 21-10
-A 4-Ω resistor is connected in parallel with a 12-Ω resistor and this combination is connected to a 6-V DC power supply as shown in Figure 21-10. What is the current through the 12-Ω resistor?
A) 1.5 A
B) 2.0 A
C) 2.5 A
D) 3.0 A
E) 0.5 A

Question

FIGURE 21-10 
-A 4-Ω resistor is connected in parallel with a 12-Ω resistor and this combination is connected to a 6-V DC power supply as shown in Figure 21-10. What is the current through the 12-Ω resistor?
A) 1.5 A 
B) 2.0 A 
C) 2.5 A 
D) 3.0 A 
E) 0.5 A

Quizplus · Accepted Answer

The voltage across resistors in parallel is the same. Using Ohm's law (V = IR), the current through the 12-Ω resistor is I = V/R = 6V/12Ω = 0.5 A.

FIGURE 21-10 -A 4-Ω Resistor Is Connected in Parallel with a 12-Ω