Magnetic Fields of currents

• What is the direction of a magnetic field around a current carrying a wire upwards?

  Anticlockwise (based off the Right hand Thumb Rule)

  
• Magnetic Field: A region in which 2 magnet interact and induce a magnetic force
• Solenoid: A cylindrical coil of wire acting as a magnet when carrying electric current.

  
• How do you increase the magnetic field strength in a solenoid?

  • Add iron core
  • Add more turns to the wire
  • Increase current
• What pole is it is the current is travelling aNticlockwise?

  North
• What pole is it if the current is travelling clockwise?

  South
• Electromagnet: A type of magnet that is created when an electric current flows through a wire, usually wrapped around a core made of iron.
• What happens to the electromagnet if a current stops flowing into it?

  There no more magnetic field and only exists while the current is flowing.