Calculate the length of nichrome wire of 1mm diameter to yield one ohm resistance
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A = πr² = π(0.321 x 10⁻³)² = 3.24 x 10⁷
= 3.24 x 10⁻⁷m²
Now, the resistance per unit LENGTH is r/l
R / l = p / a = 1.5 x 10⁻⁶ / 3.24 x 10⁻⁷ = 4.6Ω/m
Now let us find the current in the wire:
I = V / R
> 10/4.6
> 2.2 A
_________________________
I hope this helps
= 3.24 x 10⁻⁷m²
Now, the resistance per unit LENGTH is r/l
R / l = p / a = 1.5 x 10⁻⁶ / 3.24 x 10⁻⁷ = 4.6Ω/m
Now let us find the current in the wire:
I = V / R
> 10/4.6
> 2.2 A
_________________________
I hope this helps
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