Assume that each atom of copper contributes one free electron, If the current flowing through a copper wire of $$1$$ mm diameter is $$1.1$$ A, the drift velocity of electrons will be [density of Cu $$=$$ $$9gcm$$ $$-3$$, At. wt. of Cu $$=$$ $$63)$$

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Infinity Learn · Accepted Answer

The number of atoms in $$63g$$ of copper is equal to Avogadro's number $$=$$ $$6$$ $$.0$$ x $$1023Volume$$ of $$63g$$ copper  $$63$$ density $$=639=7cm3$$∴ $$n=6$$⋅$$02$$×$$10237$$ per $$cm3=6$$⋅$$02$$×$$1029/7$$ per $$m3A=$$π$$r2=$$π$$0$$⋅$$5$$×$$10$$−$$32m2The$$ drift velocity, $$vd=i/(neA)$$∴$$vd=1$$⋅$$16$$⋅$$02$$×$$1029/7$$×$$1$$⋅$$6$$×$$10$$−$$19$$×π$$0$$⋅$$5$$×$$10$$−$$32=0$$⋅$$1$$×$$10$$−$$3m/s=0$$⋅$$1mm/s$$

Assume that each atom of copper contributes one free electron, If the current flowing through a copper wire of 1 mm diameter is 1.1 A, the drift velocity of electrons will be [density of Cu = 9gcm ^-3, At. wt. of Cu = 63)

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Assume that each atom of copper contributes one free electron, If the current flowing through a copper wire of 1 mm diameter is 1.1 A, the drift velocity of electrons will be [density of Cu = 9gcm -3, At. wt. of Cu = 63)

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Assume that each atom of copper contributes one free electron, If the current flowing through a copper wire of 1 mm diameter is 1.1 A, the drift velocity of electrons will be [density of Cu = 9gcm ^-3, At. wt. of Cu = 63)