Answer :
It is false that a transformer boosts electric energy; it transforms voltage and current levels while approximately maintaining the same power level. The correct answer is option 2.
It is false to say that a transformer boosts electric energy; instead, it either increases or decreases voltage and current. The primary functionality of a transformer is to transfer electrical power from one circuit to another through electromagnetic induction, often changing the voltage and current levels in the process. However, the energy (Power = Voltage x Current) provided to the transformer (input power) is approximately equal to the energy delivered by the transformer (output power), assuming negligible energy losses which are typically very low in transformers, often with efficiencies greater than 99%.
A step-up transformer increases voltage while reducing current, whereas a step-down transformer decreases voltage while increasing current, maintaining the principle that the product of the primary current and voltage (input power) should roughly equal the product of the secondary current and voltage (output power). An isolation transformer, on the other hand, is used to transfer electrical power from a source of alternating current (AC) power to a device while electrically isolating the device from the power source, typically for safety reasons. The correct answer is option 2.
