Question
Download Solution PDFStep-up transformers are used for
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFCONCEPT:
Transformer:
- An electrical device that is used to transfer electrical energy from one electrical circuit to another is called a transformer.
There are two types of transformer:
1. Step-up transformer:
- The transformer which increases the potential is called a step-up transformer.
- The number of turns in the secondary coil is more than that in the primary coil.
2.Step-down transformer:
- The transformer which decreases the potential is called a step-down transformer.
- The number of turns in the secondary coil is less than that in the primary coil.
EXPLANATION:
- As in the step-up transformer, the number of coils in the secondary coil is more than that in the primary coil. So the electrical potential increases.
- Hence step-up transformer is used for increasing the voltage/potential. So option 4 is correct.
- In step-up transformer, the current in the secondary coil is less than that in the primary coil.
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