Question 89
Arun makes an electromagnet using:
- one 1.5 V cell
- an iron nail 15 cm in length
- 10 turns of wire around the nail.
State the effect on the strength of this electromagnet if Arun increases the number of turns of wire around the nail to 20.
- one 1.5 V cell
- an iron nail 15 cm in length
- 10 turns of wire around the nail.
State the effect on the strength of this electromagnet if Arun increases the number of turns of wire around the nail to 20.
