Question

A wire has a resistance of 16 ohms. It is melted and drawn into a wire of half of its original length. What is the resistance of the new wire? solve this full explanation​

Answer 1

Answer:

In both the cases, the volume of the wire is same. So

V=Al=A'l'orA'=All'=All/2=2A

Now R=ρlA

and R'=ρl'A'=ρ×(1/2)2A=14=ρlA=R4

∴R'=164=4Ω

% decrease in resistance

=R−R'R×100=16−416×100=75%

Answer 2

Answer:

your answer

Explanation:

mark as brainlest

Originally manufactured by Milton Bradley, Twister was introduced in 1966 and has gone on to sell tens of millions of copies