Electrical Energy Flashcards
(16 cards)
What is a conductor?
A material that can transfer heat well. e.g Metal
What is an insulator?
Something that slows the or stops the transfer of heat. e.g Wool, rubber
What is a resistor?
Something that slows the process of heat transfer but still allows it to pass, an insulator is an example of a resistor.
Define Voltage?
The amount of energy produced by the energy source or used by an appliance. it is measured in Volts (V) using a Voltmeter.
Define Current?
The amount of charge flowing through a part of a circuit. It is measured in Amps (A) using an Ammeter.
Define Resistance?
Is a measure of the restriction (or reduction) in flow of electricity. It is in the units Ohms and is calculated by dividing voltage over current.
What is the Ohms law equation?
V=IR
How are Ammeters set up in the circuit?
In the line.
How are Voltmeters set up in the circuit?
Attached off to the side. in parallel.
What happens to the current if the voltage increases but the resistance stays the same?
The voltage and current are directly linked therefore the current will also increase.
What happens to the voltage if the current decreases but the resistance stays the same?
The voltage will also increase.
what happens to the current if the voltage stays the same but the resistance is increases?
It would decrease?
What is an example of a parallel circuit in a household?
The light system.
What is energy transformation?
Energy transfer is when the type of energy changes when it collides with another object. e.g electrical energy into light energy.
What is energy transfer?
When the energy moves to another object and staying the the same form. e.g kicking a soccer ball, Kinetic energy from your leg converts to kinetic energy to the ball.
What is the law of energy conservation?
Energy cannot be created or destroyed however, transferred or transformed.
