8(ii)
Below is the diagram of a transformer :
(a) Identify the type of transformer.
(b) In this type of transformer which of the wire is thicker, the primary or the secondary? Give a reason.
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(a) As from the diagram, the number of turns at primary coil is greater than that at secondary coil so this is a step down transformer.
(b) The secondary wire is more thicker than the primary since this is a step down transformer which reduces the voltage and increases the current at secondary coil so the use of a thicker wire reduces its resistance and therefore reduces the loss of energy as heat in that coil.