Physics · Digital Electronics
A mechanical switch input is connected to a microcontroller pin without any pull-up or pull-down resistor. When the switch is open, what state is expected at the input pin?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Stable HIGH
- 2Stable LOW
- 3Floating input✓
- 4Short circuit to ground
Correct answer
Floating input
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