NCERT Class XII Chemistry <br> Chapter - Electrochemistry <br> Questions with Solutions

NCERT Class XII Chemistry
Chapter - Electrochemistry
Questions with Solutions

Question : 28

Total: 32

If a current of 0.5 ampere flows through a metallic wire for 2 hours, then how many electrons would flow though the wire?

Solution:

Q=I×t
=0.5×2×60×60
=3600C
Charge on 1 electron is 1.602×10−19C
3600 C is charge on

1.602×10−19

×3600
=

3600

1.602

×1019
=2.25×1022 electrons

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