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In a parallel circuit with a 12 V battery and three 6 Ohm resistors, what is the total current in the entire circuit?

Select one:

a. 36 Amps
b. 6 Amps
c. 4 Amps
d. 2 Amps

Answer :

First, let's find the equivalent resistance. Since they are in parallel, we can find it as follows:

[tex]\begin{gathered} \frac{1}{R_{eq}}=\frac{1}{R1}+\frac{1}{R2}+\frac{1}{R3} \\ so: \\ \frac{1}{R_{eq}}=\frac{1}{6}+\frac{1}{6}+\frac{1}{6}=\frac{1}{2} \\ Hence: \\ R_{eq}=2\Omega \end{gathered}[/tex]

Now, we can use ohm's law to calculate the current:

[tex]\begin{gathered} V=IR \\ so: \\ I=\frac{V}{R}=\frac{12}{2}=6 \end{gathered}[/tex]

Answer:

b.

6 Amps

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