1. Electromagnet
2. Core of transformer
3. Core of dynamo
4. Magnet of loudspeaker
1. 245 m
2. 490 m
3. 980 m
4. 735 m
1. it will oscillate about its original position
2. it will move further towards the positive charge
3. its electric potential energy will decrease and kinetic energy will increase
4. its total energy remains constant but is non-zero