identify which coil in a step-up transformer has more turns of wire
in a step-up transformer, the input voltage on the primary coil must be increased to a larger value on thesecondary coil. For this to happen, the secondary coil must have more turns of wire
why is it necessary to use alternating current with transformers?
The alternating current in the primary coil ensures that the magnetic fieldwithin the core is always changing. This changing magnetic field then produces an alternating current in the secondary coil.
