What is the total power dissipated in the two resistors in the circuit shown?
A)10 W
B)15 W
C)33 W
D)67 W
E)670 W

Question

What is the total power dissipated in the two resistors in the circuit shown? 
A)10 W 
B)15 W 
C)33 W 
D)67 W 
E)670 W

Quizplus · Accepted Answer

Using Ohm's Law, we can find the voltage drops across each resistor: 
V1 = 2 A x 2 Ω = 4 V 
V2 = 1 A x 7 Ω = 7 V

Now we can use the formula for power: 
P1 = V1 x I1 = 4 V x 2 A = 8 W 
P2 = V2 x I2 = 7 V x 1 A = 7 W

The total power is the sum of the power dissipated in each resistor: 
P_total = P1 + P2 = 8 W + 7 W = 15 W

Therefore, the correct choice is B: 15 W.

What Is the Total Power Dissipated in the Two Resistors