35 ampere k fuse wire ko double kr k dalne se kya fyda or nuksaan hota h?

As we know

R=९×l/A

R=resistance
९=resistivity
L=length
A=cross section area

Also V=IR

As we are doubling the cross sectional are then, R=९×l/(2×A)

We can see now resistance is half after doubling area

V/R=I

Here resistance is halved so current will double so fuse will be less vulnerable to higher current and will not fuse for long time
Therefore double  current can pass from the wire the fuse than before.

Thanks for reading, please comment if you have any doubt.