Guide Questions:
1. What did you observe with the number of thumbtacks attracted to the
electromagnet when the number of winds of coil was increased to 10? 20?
2. Which electromagnet attracted the most number of thumbtacks?
3. Which electromagnet attracted the least number of thumbtacks?
4. In this activity, can you name the factor/s which affect the strength of the
electromagnet?
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Answer:
Guide Questions:
1. What did you observe with the number of thumbtacks attracted to the
electromagnet when the number of winds of coil was increased to 10? 20?
2. Which electromagnet attracted the most number of thumbtacks?
3. Which electromagnet attracted the least number of thumbtacks?
4. In this activity, can you name the factor/s which affect the strength of the
EXPALITION idont now