1. Why was electromagnet called a temporary magnet? A. Because it has a power of its own B. Because it can only be used once C. Because it can be detached to it's source of electricity D. Because it cannot be detached to it's source of electricity
2. How does electromagnet work for us? A. It makes our work easier B. It attracts metal objects C. It's good to see how it attracts metal objects D. It helps in transmitting signals through telephones, radio and television
