In the calibration of an ammeter using Faraday’s law of electrolysis, the ammeter reading is kept co
In the calibration of an ammeter using Faraday’s law of electrolysis, the ammeter reading is kept constant at 1.00A. If 13.2 g of copper is deposited in 8.5 hours, the correction to be applied to the ammeter is
[e.c.e. of copper = 3.3 x 10-4 gC-1]
In the calibration of an ammeter using Faraday’s law of electrolysis, the ammeter reading is kept constant at 1.00A. If 13.2 g of copper is deposited in 8.5 hours, the correction to be applied to the ammeter is
[e.c.e. of copper = 3.3 x 10-4 gC-1]
Faraday’s law: m = zIt. Time = 8.5 × 3600 = 30,600 s.
True current = m ÷ (zt) = 13.2 ÷ (3.3 × 10⁻⁴ × 30,600) = 13.2 ÷ 10.098 ≈ 1.31 A.
The ammeter read 1.00 A, so the correction is 1.31 − 1.00 = 0.31 A.
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