Electrons drift with speed $v_d$ in a conductor with potential diff...

Question

Electrons drift with speed $v_d$ in a conductor with potential difference $V$ across its ends. If $V$ is reduced to $V/2$, what will the drift speed become?

Accepted Answer

Step 1: Drift speed $v_d = \dfrac{eE	au}{m} = \dfrac{eV	au}{mL}$, so $v_d \propto V$. Step 2: If $V	o V/2$, then $v_d 	o v_d/2$.

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