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(i) Resistance of the coil- remedy – thick copper coil )
(ii) Hysterosis loss– remedy – soft iron core
(iii) Eddy currents – remedy – laminated iron core
(iv) Poor flux linkage – Remedy winding primary coil and secondary coil on the same core
sharon kalunda answered the question on April 4, 2019 at 10:15
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A steel bar can be magnetized and not an aluminum bar. Explain
Date posted: April 4, 2019. Answers (1)
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Describe briefly how you can identify the two bars without...(Solved)
You are provided with a two metal bars; one is magnetized while the other is un-magnetized.
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Date posted: April 4, 2019. Answers (1)
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questions below:-(Solved)
The diagram below shows a magnetic field patterns between magnets S and R. use it to answer
questions below:-
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Date posted: April 4, 2019. Answers (1)
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Date posted: April 4, 2019. Answers (1)
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blocks were placed near a magnet. State...(Solved)
Two similar pins were placed one on a wooden block and the other on an iron block. The two
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Date posted: April 4, 2019. Answers (1)
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Date posted: April 4, 2019. Answers (1)
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to make both ends A and B of the cores be North...(Solved)
The diagram figure below shows one method of making a magnet. Complete the diagram
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Date posted: April 4, 2019. Answers (1)
- The diagram figure below shows an electromagnet made by a student of Nyamogo Girls
secondary school, in the laboratory. The magnet was meant to pick up...(Solved)
The diagram figure below shows an electromagnet made by a student of Nyamogo Girls
secondary school, in the laboratory. The magnet was meant to pick up and release a metal object
(i) Name giving reasons a suitable material for part X
(ii) The electromagnet will just lift a metal of mass 150g. Taking g = 10N/Kg, what will be the
least force exerted by the magnet to do this
(iii) State the changes which the student should make so that a heavier metal object could be
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Date posted: April 4, 2019. Answers (1)
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Draw the magnetic field pattern around the magnets below.
Date posted: April 4, 2019. Answers (1)
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Explain the behaviour of pins in each case.
Date posted: April 4, 2019. Answers (1)
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The thimble scale has 50 divisions.(Solved)
The figure below shows a micrometer screw gauge being used to measure the diameter of a rod.
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Date posted: April 4, 2019. Answers (1)
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A gold leaf electroscope is positively charged as shown in the diagram in figure where C is the cap and L is the gold leaf. State and explain what happens to L when a positively charged rod is
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Date posted: April 4, 2019. Answers (1)
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In the figure below, explain what happens when one of the metal balls comes into contact with
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Date posted: April 4, 2019. Answers (1)
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negatively charged rod is brought near sphere A as shown...(Solved)
Two identical spheres A and B each standing on an insulated base are in contact. A
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Date posted: April 4, 2019. Answers (1)
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Two metal cons A and B of different sizes rest on two identical gold leaf electroscope as shown.
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Date posted: April 4, 2019. Answers (1)
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The figure below shows an uncharged pith ball under the attraction of a charged ball.
State and explain what would be observed after the two pith balls touch
Date posted: April 4, 2019. Answers (1)
- A spherical metal sphere is charged positively and brought to contact with the inside surface
of a hollow conductor it is then transferred to the cap...(Solved)
A spherical metal sphere is charged positively and brought to contact with the inside surface
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Date posted: April 4, 2019. Answers (1)
- An earthed pointed conductor C is placed near an insulated conductor X charged positively
as shown below.(Solved)
An earthed pointed conductor C is placed near an insulated conductor X charged positively
as shown below.
State and explain what happens to charges on x finally.
Date posted: April 4, 2019. Answers (1)
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from the pin hole if the image formed on...(Solved)
The length of a pinhole camera is 20cm. Determine the height of a storey building 300m away
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Date posted: April 4, 2019. Answers (1)
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through the battery, 0.28A through L2 and 0.15A through L3.(Solved)
Determine the current passing through L1 in the figure shown below, given that 0.8A passes
through the battery, 0.28A through L2 and 0.15A through L3.
Date posted: April 4, 2019. Answers (1)