A system of long four parallel conductors whose sections with the plane of the drawing lie at the vertices of a square there flow four equal currents The directions of these currents are as follows those marked ox point away from the reader, while those marked with a dot point towards the reader How is the vector of magnetic induction directed at the centre of the square?
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Four long, parallel conductors carry equal currents of 5.0A. The direction of the currents is into the page at point A and B and out of the page at C and D. Calculate the magnetic and direction of the magnetic field at point P, located at the centre of the square.

Four long, parallel conductors carry equal currents of 5.0 . The direction of the currents is into the pge at points. A and B and out of the page at C and D . Calculate the magnitude and directionof the mgnetic field at point P , located at the centre of the square.

Three conductors carrying currents are perpcndicular to the plane of the drawing. They intersect the plane at three points that lie on a single straight line, wi th the distances from the middle conductor to the other two being equal. The currents in the outer conductors flow away from the reader, while the current in the middle conductor flows toward the reader. How is the magnetic Held vector directed at the point on the straight line that is perpendicular to the straight line passing through the three conductors in the plane of the drawing and is separated from the middle conductor by a distance equal to the distances between that conductor and the outer conductors? All three currents are equal in magnitude .

Four long wires each carrying current I as shown in the figure are placed at the points A, B, C and D. Find the magnitude and direction of magnetic field at the centre of the square.

Four long wires each carrying current I as shown in Fig. are placed at points A, B, C and D. Find the magnitude and direction of magnetic field at the centre of the square.

Four parallel conductors, carrying equal currents, pass vertically through the four corners of a square WXYZ. In two conductors, the current is flowing into the page, and in the other two out into the page, and in the other two out of the page. In what directions must the currents flow to produce a resultant magnetic field in the direction shown at O, the centre of the square?

Two infinitely long parallel cond uctors carrying currents are directed at right angles to the plane of the drawing. The magnetic induction at a point M that lies in the middle between the conductors is zero. To the right of this point, the magnetic induction vector points upward, at right angles to the x axis. Find the direction of the currents flowing in the conductors, the direction of the magnetic induction vector to the left of point M, the relationship between the currents, and the point on the x axis at which the magnetic induction is maximal. The distance between the conductors is a.

Two long parallel wire A and B situated perpendicuilar to the plane of the paper at a distance 2a are carrying equal currents I in opposite direction as show in the figure . The value of magnetic induction at point P situated at equal distance r from both the wires will be

Two infinitely long parallel conductors carrying currents are directed at right angles to the plane of the drawing. The maximum of magnetic induction is at a point M that lies in the middle between the conductors. The direction of the magnetic induction vector B at this point coincides with the positive direction on the x axis. Determine the direction of the currents flowing in the conductors and the relationship that exists between these currents.

Four very long wires are arranged as shown in the figure, so that their cross - section forms a square, with connections at the ends so that current I flow through all four wires. Length of each side of the formed such square is b. The magnetic field at the central point P (centre of the square) is