Question

How many coulombs of electricity are consumed when a 100 mA current is passed through a solution of $AgNO_3$ for half an hour during an electrolys is experiment ?

• A. 1080
• B. 18000
• C. 180
• D. 2000

Answer 1

Answer: (C)

180

Answer 2

$100 \,mA = 10^2 \times 10^{-3} \,amp. = 0.1\, amp$ Quantity of electricity $= 0.1 \times 0.5 \times 60 \times 60 = 180\, C$