On a table there is a collection of materials including an iron nail, a wooden pencil, a glass rod, a piece of copper wire, a piece of string, a 3.5-volt battery, and a 6-volt battery. Which list of materials would allow you to make the strongest electromagnet?(1 point)

Question

Responses

wooden pencil, string, 3.5-volt battery
wooden pencil, string, 3.5-volt battery

iron nail, copper wire, 6-volt battery
iron nail, copper wire, 6-volt battery

Glass rod, copper wire, 6-volt battery
Glass rod, copper wire, 6-volt battery

iron nail, copper wire, 3.5-volt battery

Answer 1

To make the strongest electromagnet, you need a ferromagnetic core (like an iron nail), a conductive wire (like copper wire), and a power source (like a battery). Among the options provided, the combination of an iron nail, copper wire, and a 6-volt battery would create the strongest electromagnet because:

1. Iron Nail: It serves as an excellent ferromagnetic core that will enhance the magnetic field.
2. Copper Wire: It conducts electricity well and will be used to create the coil around the iron nail.
3. 6-Volt Battery: It provides a higher voltage, allowing more current to flow through the copper wire, which increases the strength of the magnetic field produced.

Therefore, the correct choice is:

iron nail, copper wire, 6-volt battery