- Transformers use electromagnetic induction to change AC voltage and current levels. - Step-up transformers increase voltage and decrease current. - Step-down transformers decrease voltage and increase current. - Transformers only work with alternating current (AC).
Which one of the following devices changes low voltage alternating current to high voltage alternating current and vice versa ?
Asked in UPSC NDA 1 2017 · Topic: Electric Current (Ohm's Law, resistance, resistivity, and conductivity)
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