Question

If the diameter of a wire is doubled, without
altering other parameters, the resistance will
become ............ of its original resitance.​

Answer 1

Answer:

the resistance will become 1/4 of its original resistance

Answer 2

Answer:

by the relation of drift velocity and... current flowing in the circuit ... I = neav....

where I= current flowing in the circuit

number of electrons = n , e = charge on electron

a = area of the circuit

v drift velocity.... put the relation in v= IR

R=V/I .... a= π r^2 so if diametre doubles .... r also doublesd ...so t square becomes 4 times of r... so the resistance will be 1/4R