O-LevelPhysicsMagnetism5054/12 · Oct/Nov 2020 · Q361 Mark
A transformer has 4800 turns on its primary coil and 480 turns on its secondary coil. The primary coil is connected to a 240 V a.c. supply. The secondary coil is connected to a lamp. How does the output current in the lamp compare with the input current?
Ahigher frequency a.c.
Blower frequency a.c.
Ccurrent in one direction only
Dthe same frequency a.c.
✓ Correct answer
D: the same frequency a.c.
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