Description
The current which flows through the primary coil of a transformer leads to the production of an induced current in its secondary coil. This video looks at the physics behind the use of both step-up and step-down transformers in electric circuits.
Please note that this topic will be examined in the higher tier papers only.
Key Words
primary, current, secondary, potential difference, transformer, step-up transformer, step-down transformer, coil, primary coil, secondary coil, iron core, number of turns, power
