Question

a wire of uniform cross section and of resistance 10 ohm is cut into two equal parts. the two pieces are then twisted around each other.what will be the new resistance of wire ? if know the answer then only answer it's urgent...​

Answer 1

Answer:

Let the length of the wire be 'l' and area of cross-section be 'A' and resistivity of the material be q

Therefore R =

A

ql

When it is cut then take each of the piece:-

Its resistance =

2A

ql

=

2

R

When joined in parallel Net resistance =

4

R

Explanation:

esr step fekh kar bana lena bro