Question

A wire has a resistance of 16 ohm, it is melted and drawn inti a wire of 1/2 length. Calculate the resistance of the new wire.what is the percentage in its resistance?

Answer 1

Answer:

pl/a=R

if R=16 and l=1/2l

then pl/a=8

therefore R=8

in percentage:

8/16×100=50%