If $3.0 \times 10^{15}$ Electrons Flow Through a Section of a Wire of Diameter

question 90

Multiple Choice

If $3.0 \times 10^{15}$ electrons flow through a section of a wire of diameter $2.0 \mathrm {~mm}$ in $4.0 \mathrm {~s}$ , what is the current in the wire? $\left( e = 1.60 \times 10 ^ { - 19 } \mathrm { C } \right)$

• A) \(7.5 \times 10 ^ { 14 } \mathrm {~A}\)
• B) \(0.12 \mathrm {~mA}\)
• C) \(0.24 \mathrm {~mA}\)
• D) \(7.5 \times 10 ^ { 7 } \mathrm {~A}\)

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