1 thought on “what happens to the magnetic strength of steel iron nail and soft iron wrapped on copper coil turn off”
Answer:
An iron core makes a temporary electromagnet. It loses its magnetism as soon as the switch is opened and the current is switched off. A steel core makes a more permanent magnet. It does not lose its magnetism quickly when the current is switched off.
Answer:
An iron core makes a temporary electromagnet. It loses its magnetism as soon as the switch is opened and the current is switched off. A steel core makes a more permanent magnet. It does not lose its magnetism quickly when the current is switched off.