1.

When current I flows through a wire, the drift velocity of the electrons is v. When current 2I flows through another wire of the same material having double the length and area of cross-section, the drift velocity of the electrons will be

Answer»

`(V)/(4)`
`(v)/(2)`
v
2v

SOLUTION :`v_(d)=(I)/(nAe), v_(d)^(.)=(2I)/((2A)N e)=v_(d)`


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