ELECTRIC MOTORS AND ELECTROMAGNETIC INDUCTION
2 marks · EasyDraw the pattern of magnetic field lines around a straight conductor (wire) carrying a current. Show the direction of the field using arrows.
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Concentric circles centered on the wire, arrows showing field direction according to current.
Must show: Concentric circles, Arrow direction
Common mistakes: Straight lines instead of circles; No arrows given
Show mark scheme and worked solution
Marking points
B1 · 1 mark · Concentric circles shown around wire.
B1 · 1 mark · Direction of field with arrows (right-hand grip rule).
Worked solution
Draw a wire as a straight line. Around it, draw several concentric circles. Draw arrows on the circles, showing the direction of the field (according to the direction of current).