Circuits Quizizz 1

Why do we always include a resistor in our circuits?

(this question was written by students in 2025 during lunch)

• So you don't lose aura

• So that Mr. Luong doesn't get mad (no more Mr. Nice Guy)

• To limit current so that you don't fry the arduino board & LEDs

• So that the evil doesn't escape (Kaboom)

What should you check if your circuit isn't working?

• Remake the circuit in a different spot on the board

  (these older boards are starting to develop dead spots)

• Test if the circuit works with a replacement part LED/Button/Piezo/etc

• Check to see if it looks like your diagram in TinkerCAD

• Ask a neighbor to take a look at your circuit

Before you move your parts around, you should make sure that...

• POWER IS OFF to avoid short circuits

• POWER IS ON so that you can immediately test your changes

What is the MAIN benefit of connecting all our resistors to ground/power?

• We guarantee that any possible path must go through a resistor

• It looks cool

• To ground a circuit you must include a resistor

Why is a short circuit dangerous?

Definition of short circuit:

When there is a path through a circuit with little to no resistance

• The extremely high current can permanently damage the arduino board & other parts

  ($25+)

• Trick Question: Short Circuits are not dangerous

• There is no voltage if there is minimal resistance

• Electricity cannot flow in a short circuit

These LEDs are in...

• A column

• Series

• Parallel

• Disguise

Answer explanation

They are parallel because they provide 3 separate ways to go from power to ground

These LEDs are in...

• A column

• Series

• Parallel

• Disguise

Answer explanation

They are in series because the current must flow through both to get from power to ground

This is an example of a working button

Based on this, a button connects in which way when pressed?

• horizontally

  (the right side connects to the left side)

• vertically

  (the top right connects to the bottom right)

Answer explanation

The top-right pin of a button connects to the bottom-left when pressed.

The reverse is also true