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The graph of force per unit legth betwee...

The graph of force per unit legth between two long parallel current carrying conductors and the reciprocal of the distance between them is

A

a parabola

B

a circle

C

a reactangular hyperbola

D

a straight line

Text Solution

Verified by Experts

The correct Answer is:
D
The force per unit length is given by `F/l =(mu_(0)I_(1)I_(2))/(2pia)`
wherea = distance between the two conductors
Thus `F/l prop 1/a`
Hence the graph between `((F)/(l)) and 1/a` is a straight line.
[Similar to graph of P against`1/v` or n against `1/l`]
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