I believe the most appropriate answer would be to change the core from wood to iron. This is because iron is a magnetic material while wood is not magnetic hence cant acquire magnetism. Other factors that would increase the strength of electromagnet would be; increasing the amount of electric current, and increasing the number of windings.
Answer:
The correct answer is - Statement I is true, Statement-II is false.
Explanation:
If I’m right this should be the answer
Oxygen has 8 protons
8 + 7 = 15
This isoptope is O-15