5. Resistor Selection

Question.6

You’re connecting an I²C sensor to a microcontroller. The sensor operates at 3.3V, and you use a 100Ω resistor as a pull-up on the SDA line.

What issue can this cause?

Arduino connected to I2C slave, with external pullup

Bus will function normally
Line will stay high and not toggle
Excessive current draw on low state
Sensor will not power on

Restart quiz!