The Phenomenon of Electromagnetic Induction
question 1 of 10
Grade: Twelve - G12
Q: The diagram below represents a step-down transformer used to supply an electric motor rated at 12V, 2A. (a) Calculate the number of turns on the secondary coil. (b) Assuming the transformer to be 100% efficient, calculate the size of the current in the primary coil. (c)(i) Which coil, primary or secondary, should have the thicker wire? (ii) Explain your answer to (c)(i). (d) Describe the structure of a transformer that reduces voltage.
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Did You Know?
When ethene reacts with steam (water), the product is ethanol. The equation is C2H4 + H2O → C2H5OH. This is a hydration reaction.
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