If the drift velocity of electrons in a conductor is V, then the drift velocity in another conductor of same material, but double the cross section and carrying half the current of first conductor is.
A
V
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B
V4
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C
V3
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D
V6
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Solution
The correct option is BV4 i=neAvd;vdαiAv1dvd=i1i×AA1=i2i×A2AV1d=Vd4=V4