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What circuit symbol symbol is this?
Open switch

What circuit symbol is this?
bulb

What circuit symbol is this?
Voltmeter

What circuit symbol is this?
Ammeter

What circuit symbol is this?
resistor

What circuit symbol is this?
LDR

What circuit symbol is this?
Thermistor

What circuit symbol is this?
Variable resistor

What circuit symbol is this?
Diode

What circuit symbol is this?
LED

What circuit symbol is this?
Fuse

What circuit symbol is this?
Cell

What circuit symbol is this?
Battery
Direct current (DC)
The flow of charge through a conductor in just one direction
Charge can be positive or
Negative
In metals, the charged particles are known as
Delocalised electrons
Current
The flow of electrically charged particles as they move through an electrical conductor
Current is measured in
Amps
AC (alternating current)
The direction of the current flow continually reverses
The two types of current
AC & DC
Potential difference
The difference in energy the electrons have between two points in a circuit
Potential difference is measured in
Volts
When inserting a voltmeter in a circuit, it must be in ____ with a component to measure the difference in energy from one side of the component to another
Paralell
Fixed resistor (the basic symbol one)
Restricts the flow of electrical current. The resistance does not change
Variable resistor
moving the position of the slider on this resistor changes the resistance

Thermistor
The resistance of this resistor depends on the temperature. As the temperature increases the resistance decreases
LDR (Light-Dependant-Resistor)
Resistance depends on light intensity, as light intensity increases, the resistance decreases
Diode
Ensures current can flow in one direction only. It is used to convert ac to dc
Work
Energy transferred by a force
Work done equation
W= f x d
Electrical work is done when current ____
Flows
Current equation
Q = I x T
I = charge
T= time
charge(I) is measured in
Coulombs
Time is measured in
Secs