FIGURE 21-6
-Three resistors of values 2 Ω, 6 Ω and 12 Ω are connected across a 2.0-V DC voltage source as shown in Figure 21-6. What is the total current I flowing this circuit?
A) 0.70 A
B) 1.5 A
C) 2.0 A
D) 3.0 A
E) 6.0 A

Question

FIGURE 21-6 
-Three resistors of values 2 Ω, 6 Ω and 12 Ω are connected across a 2.0-V DC voltage source as shown in Figure 21-6. What is the total current I flowing this circuit?
A) 0.70 A 
B) 1.5 A 
C) 2.0 A 
D) 3.0 A 
E) 6.0 A

Quizplus · Accepted Answer

Using Ohm's Law, we can determine the individual currents in each resistor:
- The current through the 2 Ω resistor is I = V/R = 2/2 = 1 A
- The current through the 6 Ω resistor is I = V/R = 2/6 = 1/3 A
- The current through the 12 Ω resistor is I = V/R = 2/12 = 1/6 A
The total current I flowing through the circuit is the sum of these individual currents:
I = 1 + 1/3 + 1/6 = 1.5 A

FIGURE 21-6 -Three Resistors of Values 2 Ω, 6 Ω and 12