Answer:
Diameter of wire B is 2 times the diameter of wire A
Explanation:
We have given two wire A and B
They are made up of same material and length of both the wire is sane
So 
Let the resistivity of both the wire is 
It is given that wire A has 4 times the resistance as wire B
So 
So
( As
)




So diameter of wire B is 2 times the diameter of wire A
I’m not sure what you are asking
A guessing answer the best answer but you have had to subtract the answer by the equation that it was giving u
Answer:
The sum of PE and KE remains constant
Explanation:
I think the answer to this is chemical