Electrical Circuit Flashcards
What is the unit of measurements for electrical currents?
Amps, A, Amperes
What is the instrament used to measure electrical current?
Ammeter
What are the three units of measurements?
Volts, Amps, Watts
What do Watts measure?
Power in a current
What do Volts measure?
Resistance in a current
What is the difference between series and parallel circuits?
In Parallel circuits, currents can take different routes around the circuit, while series circuits have no choice.
Do series circuits make “AND” or “OR” circuits?
And
Do parallel circuits make “AND” or “OR” circuits?
Or
Build an, “AND” or “OR” truth table
Draw it out–>
What is electric current?
Current is the flow of charge around circuit.
Which way does convention and actual current flow?
Conventional current flows positive to negative, whereas actual current flows negative to positive.
Is electric current used up in a circuit? Explain why?
No, the total current in a circuit is the same.
Can electric current flow if a circuit is incomplete.
No
What is resistance?
Anything in a circuit that slows down the flow of current.
The lower the resistance of a component the better it is at conduction electricity? True or False
True
The lower the resistance of a component the greater the current through it? T or F.
True
The number of components in a circuit can affect the current too? T or F, Explain.
True, more components increase the resistance and slow down the current.
What are conductors?
Materials that easily allow electricity to flow through them easily because they have low resistance.
What are insulators?
Materials that don’t easily allow electricity to flow through them because they have high resistance.
Give examples of conductors?
Steel and Iron
Give examples of insulators?
Wood and Rubber.
What sort of energy does batteries store? And what energy is it transformed into
Chemical energy, transformed into electrical energy.
The electrical energy then transformed into different kinds of energy? T or F?
True e.g. Light energy
What is an electron?
A tiny particle that has a negative charge. Electrons can flow through conductors.
What is a circuit?
The complete route of the positive terminal of a power source.
What is lead?
A wire that can connect different compounds in a compound.
What is a terminal?
The positive and negative ends of a power source
What are cells?
A chemical source of electrical energy. Cells may be connected in series to make up a battery.
What are volts?
The unit of electrical energy.
What are components?
One part on an electrical circuit.
What are poles?
The different ends of an electrical component - one will be positive and the other negative.
