Currents `l_1 and I_2` flow in the same direction along two parallel conductors, with `l_1 gt l_2` • In which of the three regions `I, I I or I II`, and at what distance from the conductor carryi ng current 11 is the magnetic induction equal to zero?

The same current I flows in two long parallel conductors at a distance 2d, as shown. The strength of the magnetic field at a point P, equidistant from both conductors, is

Two long parallel conductors carry currents i and 2I in the same direction. The magnetic induction at a point exactly mid way between them is B . If the current in the first conductor is reversed in direction, the magnetic induction at the same point will be

Current I_1 and I_2 flow in the wires shown in Fig. The field is zero at distance x to the right of O. Then

Two long thin parallel conductors C and D of the shape as shown in figure. Carry currents I_1 and I_2 . The separation between the conductors is a, the width of the right hand conductor is equal to b. Both the conductors are lying in one plane. Find the magnetic interaction force between them reduced to a unit length.

A conductor has three segments, two straights of length L and a semicircular with radius R. It carries a current I What is the magnetic field B at point P?

Define SI unit of current in terms of the force between two parallel current carrying conductors. (b) Two long straight parallel conductors carrying steady currents I_(a)andI_(b) along the same direction are separated by a distance d. How does one explain the force of attraction between them ? If a third conductor carrying a current I_(c) in the opposite direction is placed just in the middle of these conductors , find the resultant force acting on the third conductor.

If the potential difference across the ends of a conductor is i volt and the current flowing through the conductor is 1 ampere,the resistance of the conductor?

An infinite carrying conductor is bent into three segment (1), (2) and (3) as shown in Fig. If it carries a current i, find the magnetic induction at the origin.

Two parallel conductors A and B of equal lengths carry currents I and 10 I , respectively, in the same direction. Then