Question

If the diameter of a resistance wire is halved then its resistance becomes what?

Answer 1

Answer:

HEY GUD NOON DUDE.....

Explanation:

RESISTANCE = RESISTIVITY * LENGTH/AREA

RESISTANCE ∝1/RADIUS²                       DIAMETER = RADIUS *2

RESISTANCE ₁ ∝1(/DIAMETER₁/2) ²..............(1)

RESISTANCE ₂ ∝1/(DIAMETER₂/2)²          DIAMETER₂=DIAMETER₁/2

RESISTANCE ₂ ∝1/(DIAMETER₁/4)²............(2)

(1)/(2)

RESISTANCE₁/RESISTANCE₂= 1*(DIAMETER₁/4)²/(DIAMETER₂/2)²

                                               =  4/16

                                               = 1/4

RESISTANCE ₂= 4*RESISTANCE ₁.

HOPE THIS HELPS.