Basic Maths and Units and DimensionsHard
Question
Two long current carrying thin wires, both with current I, are held by the insulating threads of length L and are in equilibrium as shown in the figure, with threads making an angle ′θ′ with the vertical. If wires have mass λ per unit length then the value of I is :- (g = gravitational acceleration)
Options
A.
B.
C.
D.
Solution
B =
tan θ =
where fB is force per unit length(Bi)λg tan θ =
on solving
I = 2 sin θ
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