Question

If 3.2×1017 electrons pass through a wire in 0.5s. Calculate the current through it 

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Answer 1

Answer:

Current through the wire will be 0.1024 A

Explanation:

Given that,

number of e- = 3.2×10¹⁷

time = 0.5s

charge of 1 e- = 1.6×10⁻¹⁹ C

Therefore,

Current = Charge/Time

In this case,

Charge = No: of e- × Charge of 1 e-

Charge = 3.2×10¹⁷×1.6×10⁻¹⁹ = 5.12×10⁻² C

Putting the values in the equation

Current = 5.12×10⁻²/0.5

             = 10.24×10⁻² = 0.1024 A