Question

Resistance of a wire is x ohm,the wire is stretched to triple its lenght,then the resistance becomes?​

Answer 1

Answer:

• When the length is tripled then resistance will also become Nine times.

Explanation:

Volume = πr²L= A×L

Volume = πr²L= A×L&

Volume = πr²L= A×L&L′= 3L⟹A′= 3A

Volume = πr²L= A×L&L′= 3L⟹A′= 3AWe know,

Volume = πr²L= A×L&L′= 3L⟹A′= 3AWe know,R = Aρ×L

Volume = πr²L= A×L&L′= 3L⟹A′= 3AWe know,R = Aρ×LHence,

Volume = πr²L= A×L&L′= 3L⟹A′= 3AWe know,R = Aρ×LHence,RR′=LL′×A′A=L3L×3AA=9

Volume = πr²L= A×L&L′= 3L⟹A′= 3AWe know,R = Aρ×LHence,RR′=LL′×A′A=L3L×3AA=9Hence,

Volume = πr²L= A×L&L′= 3L⟹A′= 3AWe know,R = Aρ×LHence,RR′=LL′×A′A=L3L×3AA=9Hence,R′=9R .