How electricity creates a magnet
Every wire which hAS ELECTRICITY GOING THROUGH IT HAS A SMALL MAGNETIC FIELD. If you wrapa wire around something and then make electricity go through that wire, then the magnetic field will be bigger.
What is the bus part of the breadboard?
The very top row is the positive bus and the very bottom row is the negative bus. The very top bus is not connected to the bottom bus.
What is the resistor's role in a circuit?
to slow down current
EEME Dad's comments: To be more accurate, resistors actually reduces current.
Turn On Switch - How It Works
When you turn the switch, on it lights the segment to which you are connected. When you toggle it off, the light goes off.
Humans operate in the analog world
By increasing and decreasing the resistor we can change the loudness of the buzzer. When humans hear things, they can hear infinite number of loudness and the human voice can make an infinite number of loudness.
About the NPN Circuit Pt 2
That when we connect the two is send current through the two resistors (one resistor sends half the power back in the negetive battery cord keeping the circuit going) the first resistor sends the power into the base prong of the transistor hense giving power to the buzzer.