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Suppose the resistors R₁, R₂ and R₃ have the values 5 Ω, 10 Ω and 30 Ω, respectively are connected in parallel which have been connected to a battery of 12V. Calculate the total circuit resistance.

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3 Ω

6 Ω

9 Ω

12 Ω

answer is A.

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Detailed Solution

If the resistors are connected in parallel,

1/R_p = 1/R₁+ 1/R₂+ 1/R₃

the total resistance = 1/Rp = 1/5 +1/10 +1/30 = 3 Ω.

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