Two current-carrying wires are lying right on top of each (at a right angle) other, with currents flowing in the wires in the directions pointing up for the vertical wire and to the right for the horizontal wire. The horizontal wire is fixed and does not move. What happens to the vertical wire?Choices:It moves out of the pageIt rotates clockwiseIt rotates counter-clockwiseIt moves to the leftIt moves to the rightIt moves into the page
The vertical wire rotates (clockwise ?) Draw the situation where you are looking directly at the 'end' or the horizontal wire with the current coming towards you .. the magnetic field from this current is a set of concentric circles with counter- clockwise direction (using the screw-cap rule.. turn counter-clockwise to move cap towards you as it loosens). Now place the vertical wire in this field (close to horizontal wire) and apply Fleming's left-hand motor rule to find the direction of force/motion for the upward current. Above the horiz wire .. Field (first finger) points left, Current upwards (second finger), Motion/force (thumb) direction is towards you. Below the horiz wire .. Field right, Current upwards, Motion/force (thumb) direction is away from you. Seen from the side this gives the vertical wire a rotation in the vertical plane .. which way depends on which side you view it from. ('conventional' viewing would give a clockwise rotation)
i'm uncertain we've a sparkling theoretical answer to this although that is a demonstrable fact that shifting quotes have an effect on different shifting or movable quotes.even while there's no internet value obtrusive it is summarized as magnetism
