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  • The drift velocity of electrons for a conductor connected in an electrical circuit is . Th

The drift velocity of electrons for a conductor connected in an electrical circuit is \mathrm{V_{d}}. The conductor in now replaced by another conductor with same material and same length but double the area of cross section. The applied voltage remains same. The new drift velocity of electrons will be

Option: 1

\mathrm{V_{d}}


Option: 2

\mathrm{\frac{V_{d}}{4}}


Option: 3

2\mathrm{V_{d}}


Option: 4

\mathrm{\frac{V_{d}}{2}}


Answers (1)

best_answer

\mathrm{V=IR=I\left ( \frac{\rho \l }{A} \right )}

\mathrm{A\rightarrow 2A}

\mathrm{I\rightarrow 2I}

\mathrm{I=AneV_{d}}

\mathrm{V_{d} \ \ \alpha \ \frac{I}{A}}

So  drift velocity will be same

Posted by

Ritika Harsh

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