Electricity unit exam Flashcards
Friction
Rubbing one object on another object which causes a transfer of electrons
Conduction
Charged object contacts another and results in a transfer of electrons
Induction
Charged object comes close to another and results in the rearrangement in the non charged object
Grounding
Process of connecting a charged object to the ground
Lightning
A large electrical discharge caused by induction in the clouds
The electrons move towards the bottom of the cloud and is attracted to the positive charge of the ground
It then strikes which is the electrons leaving the cloud to reach the ground
Voltage =
Source of electrical potential
Resistance =
Opposition of the current
Ohms law
V= IxR
Parallel circuits : voltage current and resistance
Voltage: each load uses all energy
Current: current divides into each path but is that same
Resistance: total resistance decreases with more resistors
Series circuits: voltage current and resistance
Voltage: each load uses a portion of all energy
Current: current is always the same
Resistance: resistance increases with more resistors
Energy Source: wind
Renewable
Wind itself turns turbines that are connected to generators that produce electricity
Energy Source : fossil fuels
Non-Renewable
It’s coal, oil and natural gas
Those materials are burnt which creates heat and steam and that powers a generated to create electricity
Static electricity
When two objects run together to create a transfer of electrons
Current =
Flow of charge in circuits
Electrode
A metal strip (found in batteries) that reacts with electrolytes
