JAMB Physics 2002 Question 40

Question 40

Conduction through Liquids and Gases

A current of 0.5 A flowing for 3 h deposits 2g of a metal during electrolysis. The quantity of the same metal that would be deposited by a current of 1.5 A flowing in 1h is

A.10g
B.18g
C.2g
D.6g

Show the answer and explanation

Answer: C (2g)

Explanation

Mass deposited ∝ It. 0.5 × 3 = 1.5 × 1, so the same charge passes and the same 2 g is deposited.