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

Question

The drift velocity of electrons for a conductor connected in an electrical circuit is 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 (A) (V d /4) (B) ( V d /2) (C) 2 V d  (D) V d

Tardigrade Admin · Accepted Answer

Vd=(e E/m) τ that is independent of area

Q. The drift velocity of electrons for a conductor connected in an electrical circuit is $V_{d}$ . 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

$\frac{V _{d}}{4}$

$\frac{V _{d}}{2}$

$2 V_{d}$

$V_{d}$

$V_{d} = \frac{e E}{m} τ$ that is independent of area

Q. The drift velocity of electrons for a conductor connected in an electrical circuit is Vd​. 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

4Vd​​

2Vd​​

2Vd​

Vd​

Vd​=meE​τ that is independent of area

$\frac{V _{d}}{4}$

$\frac{V _{d}}{2}$

$2 V_{d}$

$V_{d}$

$V_{d} = \frac{e E}{m} τ$ that is independent of area