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An electron g...

Question

An electron gun emits 2.0 ×10¹⁶ electrons per second. What electric current does this correspond to?

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Solution

Rate of emission of electrons = 2 ×10¹⁶ per second
Total charge passing through the gun = 2 ×10¹⁶ ×1.6 × 10^–19= 3.2 × 10^–3 per second

We know:
Current, I = rate of flow of charge
∴ I = 3.2 × 10^–3 A

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