O-LevelPhysicsMagnetism5054/12 · May/June 2015 · Q371 Mark
A transformer consists of two coils which are wound on to a metallic core. Which type of voltage is supplied to the transformer and which metal is used to make the core?
Asupply voltage alternating, metal iron
Bsupply voltage alternating, metal steel
Csupply voltage direct, metal iron
Dsupply voltage direct, metal steel
✓ Correct answer
A: supply voltage alternating, metal iron
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