WBCS.LIVE practice question
Which quantity is increased in step-down transformer?
Solve this multiple-choice question and check the correct answer with its explanation below.
Answer options
Correct answer and explanation
Correct answer: Current
Explanation: In a step-down transformer, the current increases while the voltage decreases. 📚 Other Information: ▪️ Transformers work on the principle of electromagnetic induction. ▪️ A step-down transformer has more turns in the primary coil and fewer in the secondary. ▪️ It reduces high voltage AC to low voltage AC. ▪️ Used in electrical appliances and power supply systems. ▪️ Power (P = VI) remains constant — as voltage decreases, current increases. ▪️ They work only with alternating current (AC). ▪️ Used in distribution networks to make electricity safe for domestic use. ▪️ The transformer core is made of soft iron for efficient magnetic flux linkage.