The transformer’s primary coil is joined to the mains supply. The a.c. mains voltage is 240 V. Fig. 6.1 shows the layout.
(a)[3]
Explain why a voltage appears in the secondary coil.
(b(i))[2]
The transformer has 5600 turns on its primary coil and 350 turns on its secondary coil. Calculate the output voltage of the transformer.
(b(ii))[2]
The transformer output is connected to a 90 W filament lamp that runs at normal brightness. Calculate the current in the lamp.
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