Copper Has 8 $\times$ 10²⁸ Current Carrying Electrons Per M³ $\times$ 10^-9 M/s
B) 56

question 43

Multiple Choice

Copper has 8.5 $\times$ 10²⁸ current carrying electrons per m³. A copper wire of radius 0.15 mm carries a current of 17 mA.What is the average drift velocity for the electrons?

• A) 2.7 \(\times\) 10^-9 m/s
• B) 56 \(\times\) 10^-6 m/s
• C) 18 \(\times\) 10^-6 m/s
• D) more information is needed for this calculation

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