Circuit Symbols
This symbol looks like a zig-zag line and represents what component?
What is Resistor?
What is a schematic diagram used for?
What is To show how electrical components are connected?
In a series circuit, how many paths for current are there?
What is One?
What unit is used to measure current?
What is Amperes (Amps)?
What does “LED” stand for?
What is Light Emitting Diode?
This symbol shows a long and a short line side-by-side — what does it represent?
What is Battery or Cell?
What do the lines between symbols in a schematic represent?
What is Electrical connections or wires?
In a parallel circuit, how many paths for current are there?
What is More than one?
What unit is used to measure voltage?
What is Volts?
How does a diode control current flow?
What is It only allows current to flow in one direction?
Two parallel lines, one shorter than the other, represent what?
What is Battery?
In a schematic, what does a node (dot where lines meet) represent?
What is A connection point?
What happens to the brightness of bulbs if one burns out in a series circuit?
What is They all go out?
If voltage increases but resistance stays the same, what happens to current?
What is It increases?
What happens when current flows through an LED in the forward direction?
What is It lights up?
This symbol shows a circle with a “V” inside — what does it measure?
What is Voltage?
True or False: The physical layout of a circuit always looks like its schematic.
What is False?
What happens to total resistance when resistors are added in parallel?
What is It decreases?
What happens to current if resistance increases but voltage stays the same?
What is It decreases?
Why does an LED need a resistor in series with it?
What is To limit current and prevent damage?
This symbol shows a triangle with a line and two arrows pointing out — what component is it?
What is LED?
What symbol helps identify a ground connection?
What is Three descending lines?
If one branch in a parallel circuit is disconnected, what happens to the others?
What is They keep working?
A circuit has 9 volts and 3 ohms of resistance. What is the current?
What is 3 amps (I = V/R)?
What happens if you connect an LED backward in a circuit?
What is It won’t light up (no current flow)?