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In a step-up transformer, which of the following is true?

Practice Questions

Q1
In a step-up transformer, which of the following is true?
  1. The primary voltage is higher than the secondary voltage
  2. The primary current is higher than the secondary current
  3. The turns ratio is greater than one
  4. The power output is less than the power input

Questions & Step-by-Step Solutions

In a step-up transformer, which of the following is true?
  • Step 1: Understand what a transformer is. A transformer is a device that changes the voltage of electricity.
  • Step 2: Know the two types of transformers: step-up and step-down. A step-up transformer increases voltage, while a step-down transformer decreases it.
  • Step 3: Learn about the turns ratio. This is the number of wire loops (turns) in the primary coil compared to the secondary coil.
  • Step 4: In a step-up transformer, the turns ratio is greater than one. This means there are more turns in the secondary coil than in the primary coil.
  • Step 5: Because of this higher turns ratio, the voltage in the secondary coil is higher than the voltage in the primary coil.
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