The core of a transformer is made up of

Options :
  1. soft iron
  2. steel
  3. copper
  4. none of these
Answer and Explanation :-

Answer: Option 1

Explanation:

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It is very hard to be brave," said Piglet, sniffing slightly, "when you're only a Very Small Animal."Rabbit, who had begun to write very busily, looked up and said: "It is because you are a very small animal that you will be Useful in the adventure before us.
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