A transformer utilizes an inductor to increase or decrease the voltage in a circuit. AC flowing in a coil wrapped around an iron core magnetizes the core causing it to produce a magnetic field. This magnetic field generates a voltage in a nearby coil of wire and, depending on the number of turns in the wire of the primary (source) and secondary coils and their proximity, voltage is induced in the secondary coil.
Which of the following is not a characteristic of a step-up transformer?
has more turns in the secondary winding than in the primary winding |
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increases voltage |
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the secondary voltage is higher than the primary voltage |
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the primary voltage is higher than the secondary voltage |