- Creating a simple circuit requires a wire / battery
- The wire's ends were connected to a battery
- So, the wire's ends were connected to a simple circuit

- The wire's ends were connected to a simple circuit
- Wire was looped several times around an iron nail
- Therefore, the wire is looped several times around an iron nail and is connected to a circuit

- The wire is looped several times around an iron nail and is connected to a circuit
- A electromagnet is formed by attaching an iron nail wrapped in a copper wire to a circuit
- So, an electromaget is formed when a wire is looped around an iron nail and is connceted to a circuit

- An electromaget is formed when a wire is looped around an iron nail and is connceted to a circuit
- Electromagnets generate magnetic fields
- Therefore, a magnetic field will be generated when a wire is looped around an iron nail and is connected to a circuit

So, a magnetic field will be generated when a wire is looped around an iron nail and is connected to a circuit
Wire was looped several times around an iron nail, and the wire's ends were connected to a battery. For which of these will this device most likely be used?
- Electromagnets generate magnetic fields 
- A electromagnet is formed by attaching an iron nail wrapped in a copper wire to a circuit 
- Creating a simple circuit requires a wire / battery 
- Wire was looped several times around an iron nail 
- The wire's ends were connected to a battery