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What will happen if we supply a voltage of 25V to the Vcc of the MQ2 Gas Sensor?

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What will happen if we supply a voltage of 25V to the Vcc of the MQ2 Gas Sensor?

(a) Damage is caused

(b) Module will shut down

(c) Module will not respond for the time the voltage is applied

(d) Module will function normally

This question was addressed to me during an online interview.

The origin of the question is MQ2 Gas Sensor Module in chapter Interfacing of Sensors, Actuators, and Other Modules of Arduino

1 Answer

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Correct answer is (a) Damage is caused

The explanation is: The MQ2 Gas Sensors are mostly built to work on a voltage of approximately 5V. Any voltage lower than that and the board will not be able to power on, but however any voltage significantly above that and the board may suffer permanent damage.

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