4. Electricity and magnetism
A section of Physics, 5054
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shows a compass needle near a bar magnet. Magnetic poles are shown on the compass needle and on the magnet. A finger stops the compass needle from turning. S N N S pivot compass needle bar magnet (not to scale) The magnet causes a force on the S-pole of the compass needle. On , draw an arrow from the S-pole of the compass needle to show the direction of this force. Explain why the compass needle turns when the finger is removed. A small compass is used to plot the magnetic field lines of the magnet. Describe how the compass is used to plot magnetic field lines on a piece of paper.
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THEORY
2014
Paper 2, Variant 2
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