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  1. S

    A light source is suspended from a ceiling 5m above a working table. The

    illumination on the working table at? right angle to the light source is 250 Lux. Calculate the (i) luminous intensity of the light source (ii) illumination at a point 3m along the working table surface.
  2. S

    What is a 3-pin receptacle in relation to electronics?

    This is for a subject called electronics, so i need a definition based on this fact.
  3. S

    What is earthing in terms of electronics?

    In need more information than just grounding. I need a full definition.
  4. S

    What is a 3-pin receptacle in relation to electronics?

    This is for a subject called electronics, so i need a definition based on this fact.
  5. S

    What are simple circuits using tremble bells?

    What are simple circuits using tremble bells, door chimes and buzzers?
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