Two long current carrying thin wires , both with current `I`, are held by insulating threads of length `L` and are in equilibrium as shown in the gigure , With threads making an angle ` theta` with the vertical . If wires have mass ` lambda` per unit length then the value of `I` is :

Two long current carrying thin, wires, both with current I, are held by insultating of length L and are in equilibrium as shown in the figure, with threads as shown in the figure, with threads making an angle theta with the vertial. If the wires have mass lambda per unit lenght then the value of I is (g =gavitational acclearation)

Two identical tennis balls each having mass 'm' and charge 'q' are suspended from a fixed point by threads of length 'l'. What is the equilibrium separation when each thread makes a small angle 'theta' with the vertical ?

What is the force on a wire if its length (L ) makes an angle 'theta' with the magnetic field (B) when the current passing in the wire is l?

Two long parallel conducting wires carry current I in same direction, placed at distance b. Force per unit length of wire is

Two small balls, each having charge q, are suspended by two insulating threads of equal length L fron a hook in an elevator. The elevator is freely falling. Calculate the angle etween the two threads and tension in each thread.

Two small balls, each having charge q, are suspended by two insulating threads of equal length L fron a hook in an elevator. The elevator is freely falling. Calculate the angle etween the two threads and tension in each thread.