Exam-style question
Try this first
Relay protection diode ? select why the diode is added. Use this to support: Calculate or interpret oscillation period where appropriate.
- A.relay protection diode: the diode provides a path for induced current when the coil current is switched off for Astables.
- B.relay protection diode: claims it increases relay contact spacing.
- C.relay protection diode: uses thermistor resistance.
- D.relay protection diode: ignores electromagnetic induction.
Model answer
What a good answer should say
- The correct option is relay protection diode: the diode provides a path for induced current when the coil current is switched off for Astables.
Explanation
Why this works
This is the best answer because the relay protection diode context requires that exact electronics relationship. The other options are incorrect because they use a different component, reverse the circuit behaviour, or omit the output interpretation required for Astables.
Common mistake
No common mistake is linked to this question yet.