Physics A-Level
Current limiting and power dissipation
What Current limiting and power dissipation means in Physics A-Level, as defined for AQA.
Definition of Current limiting and power dissipation
Check what you remember
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Reference: AQA
The resistor value must limit current so the Zener power dissipation does not exceed its rating at minimum load current, when Zener current is highest.
Topics that use Current limiting and power dissipation
- Zener diode (A-level only) (AQA A-Level)
Related terms
- Cathode
- Circuit application
- Current limiting
- Forward bias
- Minimum operating current
- Reverse bias
- Reverse breakdown
- Reverse breakdown operation
Using Current limiting and power dissipation in the exam
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