MPSC PYQ

MPSC Rajyaseva 2017 GS Paper 1 — Question 56

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जर दोन रोध एकसर जोडणीने जोडले, तर त्यांचा परिणामी रोध 45 Ω होतो आणि जर तेच रोध समांतर जोडणीने जोडले, तर त्यांचा परिणामी रोध 10 Ω होतो. तर त्या रोधांच्या किमती काढा. If two resistors are connected in series, the total resistance is 45 Ω and if the same resistors are connected in parallel, the total resistance becomes 10 Ω. Find the value of the individual resistors.

1)20 Ω, 25 Ω
2)20 Ω, 20 Ω
3)30 Ω, 30 Ω
4)15 Ω, 30 Ω✓ Correct

Using series formula R1 + R2 = 45 and parallel formula (R1 * R2) / (R1 + R2) = 10, solving quadratic equations yields individual resistors of 30 Ω and 15 Ω.