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How power supply is done to RPi?(a) USB connection(b) Internal battery(c) Charger(d) AdapterThis question was addressed to me in an internship interview.The question is from Rasberry Pi topic in section Prototyping Embedded Devices of IOT

Answer»

The CORRECT answer is (a) USB connection

Easiest explanation: The unit USES a Micro USB connection to power itself (only the power pins are connected so it will not transfer data over the connection). A standard modern phone charger with a micro USB CONNECTOR will do, but NEEDS at least 700 mA at 5 volts.



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