O-LevelPhysicsMagnetism5054/11 · Oct/Nov 2014 · Q321 Mark
Which graph shows the voltage output of an a.c. generator when the coil makes one complete revolution?
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AGraph showing constant positive voltage over time
BGraph showing voltage starting at zero, increasing to a maximum, then decreasing back to zero over time
CGraph showing voltage oscillating between a positive maximum and zero over time (rectified half-wave)
DGraph showing voltage oscillating symmetrically between positive and negative maximums over time (full sine wave)
✓ Correct answer
D: Graph showing voltage oscillating symmetrically between positive and negative maximums over time (full sine wave)
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