Robotics Term 1: Lesson 1&2
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22 Terms
Electricity
The flow of electrons, which are negatively-charged sub-atomic particles.
Conductor
A material that allows electricity to flow.
Insulator
A material that blocks the flow of electricity.
Circuit
An electrical path for the flow of electricity.
Current (I)
The flow of electrons through a conductor.
Amperes
What is the unit of current?
Ammeter
What is used to measure a current?
Andre Marie Ampere
Historical figure involving currents
Voltage (V)
An electromotive force (emf) that pushes electrons to flow.
Electromotive Force
EMF stands for?
Volts
What is the unit for voltage?
Voltmeter
What is used to measure voltage?
Alessandro Volta
Who is the historical figure involving voltage?
Resistance (R)
The opposing force relative to the current.
Ohms (Ω)
What unit is used to measure resistance?
Ohmmeter
What is instrument is used to measure resistance?
Georg Simon Ohm
Who is the historical figure involved with resistance?
Ohm’s Law
The relationship between current, voltage, and resistance. It states that the current along a conductor is directly proportional to voltage and inversely proportional to resistance.
I = V / R
Ohm's Law formula
In electrical wires, the size (diameter) and length affect the resistance.
Factors affecting resistance
A smaller diameter wire generally has greater resistance than a larger diameter wire.
The relationship between wire diameter and resistance
Adding multiple loads to a circuit affects the overall current flow.
How does load affect the current?