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Dear Ajay,
It would have been nice if you posted the options as well but lets see. To begin with lets count the possibilities:
1. Current: yes, else there will be accumulation of charge in the cross-sections 2. Current density: no, coz cross-section is changing3. Drift Speed: No, coz I=neAvd and as A increases vd must decrease to keep I constant4. Electric Field: No, Is a vector and if the wire has non uniform cross-section then it can't remain in one direction5. Electric Field Magnitude: No, coz vd is proportional to E and if vd is not constant then E can't bePlease feel free to post as many doubts on our discussion forum as you can. If you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly.We are all IITians and here to help you in your IIT JEE preparation.All the best.Regards,Askiitians Experts,Gokul Joshi
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