IB Physics D4 Definitions
This page contains our IB Physics definitions for D4. By learning each one of these definitions, you will fully cover the content for IB Physics 'Induction'.
AC generator
It is a device that produces an alternating current
Electromotive force
The total energy difference per unit charge, or rate of change of flux
Flux density
It is the flux per area, or magnetic field strength
Forward-bias
It is the forward flow of current due to negligible resistance in a diode
Ideal diode
It is a device that allows current to flow in the forward direction due to negligible resistance, but not the backward direction due to infinite resistance
Non-ideal transformer
It is a transformer that has internal power losses
Rectification
It is the conversion of AC to DC
Reverse bias
It is the inhibition of reverse flow due to infinite resistance in a diode
Root mean square current
It is the sub-maximum current from a AC generator
Root mean square voltage
It is the sub-maximum voltage from a AC generator
Smoothing
It is the conversion of a pulsating DC to a stable potential difference
Step-down transformer
It is a transformer that decreases the output voltage
Step-up transformer
It is a transformer that increases the input voltage
Total flux linkage
It is the amount of flux passing through all turns of a coil
Transformer
It is a device that takes an alternating voltage input and produces an alternating voltage output via electromagnetic fields
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