Question

Question no. 7 pls

If u say the right answer I will mark u as the brainliest

Answer 1

Answer:

remember resistance is directly proportional to length and inversely proportional to radius

Explanation:

let R1 =L/R

LET R2=2L/2R=L/R

THEREFORE WE SEE R1=R2

LET R1=R2=R

SINCE THE COMBINATION IS PARALLEL

THEREGORE EFFECTIVE RESISTANCE IS r

1/r=1/R+1/R =2/R

THEREFORE EFFECTIVE RESISTANCE IS r=R/2

RESISTANCE OF NAVYAS WIRRE IS R

THEREFORE RATION OF TOTAL RESISTANCE TO RESISTANCE OF NAVYAS WIRE IS 1/2

THANK YOU

Answer 2

Explanation:

total wire = 3l and 3r

ratio = 3l : l : :3r : r