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.
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.