Electricity Flashcards
What is electrons ability to move?
Energy
What is the force exerted by an electron on anything that has an electric charge?
Electric Field
What is the force that pushes electrons?
Electrostatic force
Opposite charges attract or repel?
Attract
Like charges attract or repel?
Repel
What is it when a material has an excess of a lack of electrons?
Static electricity
What is the movement of electrons to relieve a separation in charge?
Static discharge
What moves electrons through wire?
Electrostatic force
What is material that allows electrons to move through it easily?
Conductor
In a conductor are electrons loosely held or tightly held?
Loosely
What are examples of conductors?
Metals like copper and silver
What is material that doesn’t allow electrons to move through it easily?
Insulator
In a insulator are electrons loosely held or tightly held?
Tightly
What are examples of insulators?
Plastic, wood, rubber, and glass
What happens as water/electrons move?
They can do work
What is the amount of potential energy (pressure) stored in the electrons?
Voltage Potential Difference
What does a large separation of charge do?
It creates high voltage
What is the “pump” for electrons?
A battery
What is a closed path through which electrons can flow?
Circuit
What is a circuit that is complete, where electrons can flow?
Closed circuit
What is a circuit where the continuity has been broken by an interruption in the path for electrons to flow?
Open circuit
What is an electric circuit offering little or no resistance to the flow of electrons?
Short circuit
Why is a short circuit dangerous?
The high currents encountered can cause large amounts of heat energy to be released
What is a source of electricity?
A battery
What will open or close the circuit?
A switch
What converts electrical energy into light?
A lamp
What is a series circuit?
A current travels in a single path
What stops the flow of current in a series circuit?
A break
What happens to a series circuit as lights are added?
It gets dimmer
What is a parallel circuit?
A current travels in multiple paths
Which path do parallel circuit usually take?
The path of least resistance
What is the measure of the opposition to the flow of electrons?
Resistance
What is the uniform flow of electrons through a circuit?
Current
What is Ohms Law?
Voltage = Current x Resistance
The amount of work to be done in a certain amount of time
Power
What is the symbol and unit of measurement for current?
- I
2. Ampere - AMP
What is the symbol and unit of measurement for voltage?
- V
2. Volts
What is the symbol and unit of measurement for resistance?
- R
2. Ohm
What is the symbol and unit of measurement for power?
- W
2. Watts
