In this circuit, the current through the 5-$\Omega$ resistor is approximately
A) 4 A
B) 20 A
C) 10 A
D) 40 A
E) 8 A

Question

In this circuit, the current through the 5-$\Omega$ resistor is approximately
A) 4 A 
B) 20 A 
C) 10 A 
D) 40 A 
E) 8 A

Quizplus · Accepted Answer

Using Ohm's Law, we can find the voltage drop across the 5 Ω resistor:

V = IR
V = 20 A x 5 Ω
V = 100 V

Since the voltage drop across the 5 Ω resistor is 100 V, and it is the only resistor in the circuit with that voltage drop, we can conclude that the current through it is the same as the current through the battery:

I = V/R
I = 100 V / 10 Ω
I = 10 A

Therefore, the current through the 5 Ω resistor is approximately 10 A. The answer is (C).

In This Circuit, the Current Through the 5- Ω\OmegaΩ Resistor Is Approximately A) 4 a B) 20 a C)

In This Circuit, the Current Through the 5- $\Omega$ Resistor Is Approximately
A) 4 a
B) 20 a
C)