Question

manipulating the strength of an electromagnet
simple electromagnet
predict what would happen to the strength of the
iron nail
using a battery with a higher voltage:
coiled wire
stronger force of attraction
wrapping the wire around the nail only three times:
wire
ent by reversing the
battery
stronger force
of attraction
weaker force
of attraction
no change

Explanation:

The strength of an electromagnet depends on factors like the number of wire coils and the voltage (which affects current). A higher voltage increases current, enhancing magnetism. Fewer coils (wrapping only three times) reduce magnetic strength as there are fewer loops to concentrate the magnetic field.

Answer:

Wrapping the wire around the nail only three times: weaker force of attraction.