Primary And Secondary Coil

The perfect set for experimenting with transformer principles and induction.
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Experiment with Transformer Principles and Induction using a primary and secondary coil.

The primary coil is the one with voltage applied, or the 'input'. The secondary coil is the one in which a voltage is induced by electromagnetism, or the 'output'. In a step up transformer, the secondary coil voltage is higher than the primary.

Discover the power of primary and secondary coils with this kit which includes a detailed information sheet to help you become an expert on transformer principles.

Age: 11 +

What you get

Primary and Secondary Coil. The outer coil is 5cm tall and 2.5cm in diameter. The inner coil is 5cm tall and 7.6cm in diameter. The removable steel core with handle is 1.9cm in diameter and 8.2cm tall. All coils are wrapped in 20-gauge magnet wire with insulated binding posts as connectors.

Detailed Instruction manual included.


  • Electricity
  • Electromagnetism
  • Transformer
  • Primary coil
  • Secondary coil
  • Voltage
More Information
Length (cm) 11
Width (cm) 8
Height (cm) 6
Age Group 11-12 Years, 12+ Years
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