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If resistors are connected in parallel circuit then equivalent resistance R
= 1/R = 1/R₁ + 1/R₂ + 1/R₃
Here R = 3 , R₁ = 10 , R₂ = 30
∴1/3 = 1/10 + 1/30 + 1/R₃
= 1/3 = 4/30 + 1/R₃
= 1/3 - 4/30 = 1/R₃
= 10 - 4 /30 = 1/R₃
= 6 / 30 = 1/R₃
= 1/R₃ = 1/5
∴ R₃ = 5Ω
∴ Third Resistor = 5Ω
PLZ MARK AS BRAINLEST.
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