Question

The resistors in the parallel circuit shown both have values of 4 Ω. The battery has a value of 12 volts. What's the total circuit resistance?

A. 20 Ω
B. 40 Ω
C. 60 Ω
D. 80 Ω

Answer 1

The total resistance in a parallel circuit can be calculated using the equation 1/Req = 1/R1 + 1/R2 + 1/R3 + ... For this specific case with two 4Ω resistors, the total circuit resistance is 2Ω.

Step-by-step explanation:

The total resistance in a parallel circuit can be calculated using the equation:

1/Req = 1/R1 + 1/R2 + 1/R3 + ...

For this specific case with two 4Ω resistors, the calculation would be:

1/Req = 1/4 + 1/4 = 2/4 = 1/2

Therefore, Req = 2Ω

The total circuit resistance in this case would be 2Ω, so the correct answer is A. 20Ω.