This document discusses transformers and their types. It explains that a transformer uses mutual induction to operate and that there are two main types: step up transformers, which have fewer primary turns and thicker primary wire to increase voltage, and step down transformers, which have more primary turns and thinner primary wire to decrease voltage. The document provides details on how step up and step down transformers work.

1. KAVIYATTU COLLEGE
PIRAPPANCODE

2. PHYSICAL SCIENCE
Submitted by
JISHA SURESH

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4. TRANSFORMERS

5. TRANSFORMER
A transformer is a device that employs the principle of
mutual induction

6. TRANSFORMER

7. TYPES OF TRANSFORMERS
There are two types of transformers.
 Step up transformer
 Step down transformer

8. STEP UP TRANSFORMERS
 Number of turns in primary are lesser than that of
secondary.
 Thickness of the wire used in primary is more
compared to secondary.
 The current is more in primary coil.

10. STEP DOWN TRANSFORMER
 Number of turns in the primary is more than that of
secondary.
 Thickness of wire used in primary is less than that of
secondary.
 Current is more in the secondary coil.

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