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Electric Field inside a Conductor under Electrodynamic Conditions

Assume that e...

Question

Assume that each atom in a copper wire contributes one free electron. Estimate the number of free electrons in a copper wire having a mass of 6.4 g

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Solution

64 grams of copper have 1 mole 6.4 grams of copper have 0.1 mole

1 mole = No atoms 0.1 mole

= $(n o \times 0.1) a t o m s$

$= 6 \times 10^{23} \times 0.1 a t o m s$

$= 6 \times 10^{22} a t o m s$

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