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Which statement correctly describes a step-up transformer? a. it increases the amount of electric energy available. b. it increases the voltage of an electric current. c. it changes direct current into alternating current. d. it has more loops of wire in its primary coil.
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In an experiment, how can i change human errors? be specific.
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How long does it take the students’ kettle to come to the boil if 3 kg of ice at 0 °C is put in it?...
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