[Solution from source] The current drawn is I = P/V = 100/125 = 0.8 A, so the charge passed in one minute is 0.8 × 60 = 48 C. By Faraday's first law m = ZQ = 0.367 × 10⁻⁶ × 48 ≈ 1.76 × 10⁻⁵ kg = 17.6 mg. Forgetting the 60 s factor or using V instead of I gives none of the other values. Answer (1).