🔍 Key Concepts

• Step-up transformer: How primary and secondary voltages compare • Turns ratio: Relationship between number of turns and voltage in each winding • Direction of change in turns when voltage is increased from primary to secondary

💭 Think About

• If a transformer is "step-up," does the voltage increase from primary to secondary, or decrease? • When voltage increases from one side of the transformer to the other, does that side have more or fewer turns? • Compare: in a step-UP transformer, which winding (primary or secondary) should have the larger number of turns to create the higher voltage?

✅ Before You Answer

• Be sure you know that step-up means secondary voltage is higher than primary voltage • Recall the proportion: voltage ratio is directly related to turns ratio (more turns → higher voltage) • Check which winding (primary or secondary) must have more turns to produce the higher voltage, then see which choice matches that relationship.