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Using a soft iron would allow the magnetism of the core to be changed easily, lessening the amount of energy lost and increasing the efficiency of the transformer.
Arnold Diru answered the question on June 23, 2018 at 03:13
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Describe how an image is formed on a CRO screen.
Date posted: June 19, 2018. Answers (1)
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Explain the meaning of Electric potential
Date posted: June 18, 2018. Answers (1)
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Explain the meaning of an Electric Field, E(r).
Date posted: June 18, 2018. Answers (1)
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In a hydraulic piston, a force of 200N is applied to a master piston of area 25cm squared. If the press is designed to produce a force of 5000N determine the area of the slave piston.
Date posted: June 16, 2018. Answers (1)
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i)When is a Charged conductor said to be in electrostatic equilibrium?
ii)What are the guidelines followed charge and electric field at electrostatic equilibrium?
Date posted: June 14, 2018. Answers (1)
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What are the Differences between Gravitational and Coulomb forces
Date posted: June 14, 2018. Answers (1)
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Date posted: June 14, 2018. Answers (1)
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Discuss the disadvantages of friction.
Date posted: June 8, 2018. Answers (1)
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A car of mass 1200kg moving at 90km/h is brought to rest over a distance of 20m. Calculate the breaking force.
Date posted: June 5, 2018. Answers (1)
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For a body moving with a constant acceleration, a,show that v=u+at where v and u are the final and initial velocities respectively while t is the time taken
Date posted: June 5, 2018. Answers (1)
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Distinguish between density and relative density.
Date posted: May 25, 2018. Answers (1)
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State two advantages of a thermocouple over a mercury in glass thermometer
Date posted: May 23, 2018. Answers (1)
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Give a reason why water wets glass while mercury does not
Date posted: May 19, 2018. Answers (1)
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Date posted: May 10, 2018. Answers (1)
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Describe how you can measure the diameter of a tennis ball.
Date posted: May 10, 2018. Answers (1)
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Briefly describe an experiment to show how the image is formed in a pinhole camera
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Date posted: April 28, 2018. Answers (1)
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Date posted: April 28, 2018. Answers (1)
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Date posted: April 27, 2018. Answers (1)
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A girl is shouting in front of the cliff from far away. She hears the echo 0.5 sec later. What is the velocity of sound in air.
Date posted: April 26, 2018. Answers (1)