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
Create a free account to view solution
View Solution FreeTopic: Basic Maths and Units and Dimensions·Practice all Basic Maths and Units and Dimensions questions
More Basic Maths and Units and Dimensions Questions
In the figure ABC is the cross section of a right angled prism and BCDE is the cross section of a glass slab. The value ...Two stones are thrown up simultaneously with initial speeds u1 and u2 (u2 > u1). They hit the ground after 6s and 10s...Two forces are such that the sum of their magnitudes is 18 N and their resultant is 12 N which is perpendicular to the s...Displacement x of a particle is given by x = At2 + Akt3, where t is time. Units of k can be...On observing light from three different stars P, Q and R, it was found that intensity of violet color is maximum in the ...