Question

A student is planning an experiment using a nail, wire, and a battery to investigate which factors affect the strength of an electromagnet and which factors do not affect its strength. Which factor would LEAST affect the strength of the electromagnet?
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1 point
the kind of metal used for the nail in the electromagnet
the amount of current flowing through the electromagnet
the number of coils of wire used in the electromagnet
the direction of the current flowing through the electromagnet

Answer 1

The factor that would least affect the strength of the electromagnet is the kind of metal used for the nail in the electromagnet. The material of the nail may impact the conductivity of the electromagnet, but it would have less of an effect compared to the other factors listed.