Question

a student has two resisters 2Ω and 3Ω,she has to put one of them in a circuit, which total has 9A. which one should she use?

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Answer 1

Answer:

your answers is 2Ω

here is the solution

let R² be 2Ω

so 1/Req = ¼ + ½

1/Req = ¾

Req = ⁴/3

now by ohms law R = V/I

I = V/R

I = 12 / ⁴/3

I = 9A

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