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The number density of electron in copper is 8.5 × 1028 m-3. What is the current flowing through a copper wire of length 0.2 m, area of cross-section 1 mm2 when connected to a battery of 4.0 V? Given that electron mobility = 4.5 × 10-6 m2V-1s-1 and charge on the electron is 1.6 × 10-19 C. |
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Answer» The number density of electron in copper is 8.5 × 1028 m-3. What is the current flowing through a copper wire of length 0.2 m, area of cross-section 1 mm2 when connected to a battery of 4.0 V? Given that electron mobility = 4.5 × 10-6 m2V-1s-1 and charge on the electron is 1.6 × 10-19 C. |
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