1. When the 10 Ω resistance is connected in series with the unknown resistance R, the balance point is at 50 cm, indicating that the ratio of resistances in the two gaps is 1:1. Hence, R₁ + 10 = R₂. After removing the 10 Ω resistance, the balance point shifts by 10 cm, making the new balance point 40 cRead more

    When the 10 Ω resistance is connected in series with the unknown resistance
    R, the balance point is at 50 cm, indicating that the ratio of resistances in the two gaps is 1:1. Hence,
    R₁ + 10 = R₂. After removing the 10 Ω resistance, the balance point shifts by 10 cm, making the new balance point 40 cm.

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