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A thin circular-disk earrings 10.0cm in diameter is plated with a coating of gold 0.20mm thick from an Au3+ bath. How many days (approx.) does it take to deposit the gold on one side of one earring if the current is 0.193 ampere.

0 2 Views | Posted a month ago
Asked by Shiksha User

  • 1 Answer

  • V

    Answered by

    Vishal Baghel | Contributor-Level 10

    a month ago

    Eq. = no. of faraday

    1 0 × 0 . 2 × 1 0 − 2 × 1 9 . 7 1 9 7 × 3 = 0 . 1 9 3 × t 9 6 5 0 0

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