Question

pls answer the question in the given attachment

Answer 1

OPTION B IS CORRECT ANSWER AS WE HAVE THE FORMULA:

R=ro×l/a

R=RESISTANCE

ro=resistivity

l=length

a=area

RESISTIVITY IS SAME IN CASE OF ALL WIRES AS ALL WIRES ARE MADE OF SAME MATERIAL.

NOW,

RESISTANCE IS DIRECTLY PROPORTIONAL TO LENGTH IT MEANS MORE THE LENGTH MORE THE RESISTANCE,AND INDIRECTLY PROPORTIONAL TO AREA IT MEANS MORE THE AREA LESS IS THE RESISTANCE.

GIVEN,

WHICH OF THEM HAS LOWEST RESISTANCE,SO WE HAVE TO FIND THE ONE WHICH HAS MORE AREA AND LESS LENGTH THAT WE CAN OBSERVE IN OPTION B.

SO OPTION B IS CONFIRMED THAT IT HAS THE LEAST RESISTANCE.