Fill In The Blank Notes


Strength of a magnetic field
of a solenoid can be increased by:


Dorling Kindersley Books

1) Increasing or decreasing the number of turns? (of wire)





2) Increasing or decreasing current?





3) inserting a highly permeable core (increases flux density)


high permeable cores 


- Nickel, Iron, Cobalt,


These materials tighten existing flux lines, do not increase # of flux lines


Drag each metal to the magnet

[ Flash ]

Identify the low permeable materials



low permeable cores


 - air (Pulling out the core)






Flux Lines
2 Magnets





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