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     EduGorilla 
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    A wire which has two sections A and B of diameter 20 cm and 35 cm respectively. Current ‘I’ is passing through the wire. An electrician measure that the mean drift velocity in section A and B are VA and VB respectively. Find the ratio of VB:VA 

    Options :-

    1. 49 : 16

    2. 16 : 25

    3. 25 : 9

    4. 16 : 49

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