![]() The convention when drawing magnetic fields is that the arrows show the direction of the force that would be exerted on the N-seeking pole of a permanent magnet placed at that point.Īlthough the field lines are often curves, the force at any point acts in a straight line. The arrows show the direction of the force at any point in the field. Like other fields, magnetic fields are represented by lines with arrows. Understand the meaning of magnetic field strengthĬalculate the size and direction of the force that acts on a current in a magnetic fieldĪre due to permanent magnets and electric currentsĪffect permanent magnets and electric currents. After studying this section you should be able to:ĭescribe the magnetic fields inside a solenoid and around a wire when current passes in them
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