The figure below shows two parallel magnets with unlike poles adjacent to each other. Sketch the magnetic field pattern around the magnets (2mks)Solution
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State the conditions for generation of e.m.f from a magnet (2mks)
(a) The diagram in the figure below represents a wheel and axle used as a machine, whose efficiency is 80% to raise 400N of building materials. The wheel and axles have diameters of 75cm and 15cm respectively.
(i) Mark on the diagram the correct position and direction of the load to be lifted (1mk)(ii) Name the principle on which this machine works (1mk)
The principle of moments
(iii) Calculate the effort needed to raise the load (3mks)
(iv) The machine is operated manually and raises the load to a height of 5m in 20 seconds. Calculate the power developed by the operator (2mks)(b)
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FORM I - PHYSICS SYLLABUSFORM II - PHYSICS SYLLABUSTOPICS
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M.A NyamotiMy passion is to see students pass using right methods and locally available resources. My emphasis is STEM courses
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