Determine $\varepsilon$ when I = 0.50 A and R = 12 $\Omega$ .
A)12 V
B)24 V
C)30 V
D)15 V
E)6.0 V

Question

Determine $\varepsilon$ when I = 0.50 A and R = 12  $\Omega$ . 
A)12 V 
B)24 V 
C)30 V 
D)15 V 
E)6.0 V

Quizplus · Accepted Answer

We can use Ohm's Law to find the voltage drop across the resistor:
V = IR = (0.50 A)(12 Ω) = 6 V
Since the voltage drop across the resistor is the same as the voltage drop across the source (due to the fact that the circuit is a simple series circuit), the output voltage is also 6 V. Therefore, the correct answer is B) 24 V, since there are four series-connected sources, each with a voltage of 6 V.

Determine ε\varepsilonε When I = 0 Ω\OmegaΩ A)12 V B)24 V C)30 V D)15 V

Determine $\varepsilon$ When I = 0 $\Omega$
A)12 V
B)24 V
C)30 V
D)15 V