Electricity Flashcards
What is Static Electricity?
Static electricity is the result of an imbalance between negative and positive charges in an object.
What are insulators?
Insulators are materials do not allow electricity to travel through them. Plastic is an example of this.
What are conductors?
Conductors are materials that allow electricity to pass through them. Metals are an example of this.
What is current?
Current is a measure of the amount of charge, or electrons that travel around a circuit. It is measured in amperes (A).
What is Voltage/Potential Difference?
Voltage is a measure of the energy the electrons have. It is measured in Volts (V).
What is Resistance?
Resistance is a measure of the opposition to current flow in an electrical circuit. It is measured in Ohms (Ω).
What is Ohms law?
The voltage and the current in a circuit are directly proportional. This means that they both increase at the same rate. We call this Ohm’s Law.
What is the Ohms Law triangle?
V
———
I | R
If the graph is a straight line, what does it mean?
The graph is a straight line which shows that voltage and current are directly proportional.
What is a series circuit? (Include a diagram)
A series circuit is one in which the components are placed in one single loop in a circuit. If one bulb goes out the other will go out too, as there is no other path to the battery.
What is a parallel circuit? (Include a diagram)
A parallel circuit is one in which there are two components parallel in the circuit on two separate loops. If one bulb goes out the other continues to light up, as it is still connected to the battery.
What is power?
Power is a measure of how much energy an electrical device converts in one second. The unit of power is the Watt (W).
What is the electrical power triangle
P
———
I | V
