Question

A battery is connected at its positive end by a wire to the head of an iron nail. The wire then coils aground the nail to its tip and from there to the negative end of the battery.
Predict what would happen to the strength of the electromagnet in each situation.
Using a battery with a higher voltage:
Wrapping the wire around the nail only three times:
Changing the direction of the current by reversing the battery connections:
Using a plastic stick in place of the iron nail:
Holding the nail vertically rather than horizontally: it

Answer 1

Answer:

sing a battery with a higher voltage:  

✔ stronger force of attraction

Wrapping the wire around the nail only three times:  

✔ weaker force of attraction

Changing the direction of the current by reversing the battery connections:  

✔ no change

Using a plastic stick in place of the iron nail:  

✔ weaker force of attraction

Holding the nail vertically rather than horizontally:  

✔ no change

Explanation: You're Welcome

Answer 2

Answer:

✔ stronger force of attraction

✔ weaker force of attraction

✔ no change

✔ weaker force of attraction

✔ no change

Explanation: