A potential difference between is applied to the copper wire of length l and radius r if v is doubled then the drift velocity will be
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Answer:
The drift velocity will be double.
Explanation:
According to the problem the length of the copper wire is given as l and radius of the copper wire given as r
Let the potential difference be v volt
Now let the drift velocity is v(d)
now we know that v(d) = -eE/m τ
we will take positive value,
v(d) = eEτ /m
Now we know that the electric field ,E = v/l
Therefore,
v(d) = eτ/m x v/l
Therefore we can see that drift velocity is directly proportional to voltage
Therefore v(d) ∝ v
Hence we can say that if we double the voltage the drift velocity will be double.
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