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A steel plate of size 6 cm xx 6 cm is to...

A steel plate of size 6 cm `xx` 6 cm is to be coated by a metal on both sides with a coating thickness of 1.0 mm by electrolysis. If the density and ece of the metal are respectively10 `g " cm"^(-3) and 0.001g " C"^(-1)`, then the strength of the current to complete the process in one hour is

A

`1A`

B

`0.5 A`

C

`6A`

D

`2 A`

Text Solution

Verified by Experts

The correct Answer is:
A
We know that, mass deposited
= Volume `xx` density
`= (6 xx 6 xx 0.01) xx 10`
`= 3.6` g
Required charge `= (m)/(z) = (3.6)/(0.001)`
`= 3600` C
`1= (Q)/(t) = (3600 C)/( 3600 s) = 1A`
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