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)

Responses

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

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

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

iron nail, copper wire, 3.5-volt battery

The correct answer is:

iron nail, copper wire, 6-volt battery