The best material for the core of the primary and secondary coils of an induction coil is
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- A Copper, because it has a good conductor of electricity
- B Steel, because it becomes magnetic and retains its magnetism for a long time
- C Rubber, because it is a good insulator and the user is prevented from shock
- D Soft iron, because it becomes magnetic but easily loses its magnetism
- E Glass, because it is transparent
Correct Answer: Option D
Explanation:
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