Published by:
CGP EDU Academic Team
Published on: August 21, 2026
Two long parallel wires are at a distance of 
. Both of them carry 
of current in the same direction. The force of attraction per unit length between the two wires is
A
B
C
D
None of these
Text Solution
Verified by ExpertsThe correct answer is:
Magnetic force between parallel wires per unit length is
where, 
and 
are the currents in wire 1 and wire 2, respectively and 
is the distance between them. Since, it is given that between two wires, there is a force of attraction. So, the direction of current in both will be the same.
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