MHT CET · Chemistry · Electrochemistry
How many electrons flow when a current of 5 amp is passed through a cell for 200 sec?
- A \(9.65 \times 10^{21}\)
- B \(1 \cdot 60 \times 10^{21}\)
- C \(3 \cdot 12 \times 10^{21}\)
- D \(6 \cdot 24 \times 10^{21}\)
Answer & Solution
Correct Answer
(D) \(6 \cdot 24 \times 10^{21}\)
Step-by-step Solution
Detailed explanation
\(
\mathrm{Q}=\mathrm{I} \times \mathrm{t}=5 \times 200=1000 \mathrm{C}
\)
The charge of one electron is \(1.602 \times 10^{-19} \mathrm{C}\)
No. of electrons passed \(=\frac{1000 \mathrm{C}}{1.602 \times 10^{-19} \mathrm{C}}=6.24 \times 10^{21}\)
\mathrm{Q}=\mathrm{I} \times \mathrm{t}=5 \times 200=1000 \mathrm{C}
\)
The charge of one electron is \(1.602 \times 10^{-19} \mathrm{C}\)
No. of electrons passed \(=\frac{1000 \mathrm{C}}{1.602 \times 10^{-19} \mathrm{C}}=6.24 \times 10^{21}\)
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