Energy & Electricity Flashcards
Charged by Conduction
Permanent change and both objects are the same charge. When a neutral object touches a very positive object, that causes the electrons in the neutral object to go into the very positive object, making the neutral object now positive and the very positive object to be less positive.
Charged by inductions
Temporary change and the two objects have opposite charges. When a positive object goes near a negative, the electrons in the negative object goes as close the positive object and vise versa
What’s the law of conservation of energy
Energy can not be created nor destroyed, only transformed
What is an example of a power supply
Battery
What is an example of control
Switch
What is an example of a conductor
Wires
What is an example of a insulator
The plastic around the wires
What is an example of a protector
Resistors
What is energy transformation in a circuit
The electricity in the wires transform into light and heat in a light bulb (electrical energy -> light energy & heat energy)
What happens when a switch is switched off
The flow of current is stopped
What another example of protection in a circuit other than a resistors
Fuse and breaker
What is the relationship between voltage, current intensity and resistance
As resistance increases in a circuit, current intensity decreases but voltage stays the same
As voltage increases, current intensity increases
What is the best type of wire for conductivity
Cold, Thick, Short and Copper
Parallel vs. Series
Series circuit: When all component are attached to one path for the current to flow
Parallel circuit: When the components have 2 or more distinct paths that the current can take
Alternating current vs. Direct current
Direct current: The current flows one way
Alternating current: The current is able to flow back and forth
