The diagram above shows a magnet X with its south pole moved along a soft - iron bar PQ in the direction shown. After some time, the poles at P and Q respec...

Assessment: JAMB UTME - Physics - 1999 Subject: Physics

Question 1 Report

The diagram above shows a magnet X with its south pole moved along a soft - iron bar PQ in the direction shown. After some time, the poles at P and Q respectively are

Answer Details
When a magnet is moved along a soft-iron bar, the bar becomes temporarily magnetized. In this case, the south pole of the magnet X is moved towards point P of the bar PQ. As a result, the end of the bar near P becomes a north pole while the end near Q becomes a south pole. Therefore, the poles at P and Q respectively are North and South. So, the answer is "North - South".
Read lesson note on Magnets And Magnetic Fields (JAMB)
Read lesson note on Gravitational Field (WAEC)
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