Question

if the diameter of a wire is halve then its resistance becomes? examination is important​

Answer 1

When the diameter is halved, area becomes 1/4 th times. So resistance will become 4 times .

Answer 2

Answer:

resistance increases

Explanation:

if the diameter of a wire is halve then its cross sectional area also decreases,

we know that resistance is inversely proportional to cross sectional area so resistance increases as cross sectional area decreased