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
iron core, number of turns, power, primary, current, secondary, potential difference, transformer, step-up transformer, step-down transformer, coil, primary coil, secondary coil
