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MODERN PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXERCISE
- Describe an activity to demonstrate the direction of the magnetic fiel...
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- Using Biot-Savart's law, derive an expression for magnetic field at th...
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- What is an electromagnet?
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- What is an electromagnet ? List any of its two uses?
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- Draw a labelled diagram to show how an electromagnet is made.
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- What is the purpose of the soft iron core used in making an electroma...
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- What are magnetic field lines? How is the direction of a magnetic fiel...
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- Draw the lines of force of the magnetic field through and around singl...
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- Consider a circular loop of wire lying in the plane of the table, let ...
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- Identify the nature of poles of the magnets in a given figures.
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- Draw magnetic field lines due to a current carrying circular wire plac...
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- What is the magnitude of the induced currents in circular loop KLMN of...
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- An alternating electric current has a frequency of 50 Hz. How many tim...
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- What will be the frequencey of alternating current if its direction ch...
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- What is the advantage of the third wire of earth connected in domestic...
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- Define the term induced current?
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- Name the colour convention for live and earth wires.
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- Explain the following : Why is the series arrangement not used in dome...
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- Explain what is short circuiting in electrical supply?
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- What precautions should be taken to avoid the overloading of domestic ...
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