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Electricity - Coggle Diagram
Electricity
A multimeter
In series
Current
Rate of flow of electrical charges in a closed circuit
Unit of Ampere (A)
Ammeter
In parallel
Voltage
Energy needed for current to pass through a closed circuit
Unit of Volt (V)
Voltmeter
Across the ends of electrical components
Resistance
Opposes current in a circuit
Unit of ohm
Electrical power
The amount of electrical energy converted to other forms of energy in one second
Unit of Watt(W)
Power=Energy/time or power=current*time
Electrical appliances
power rating
The amount of electrical energy the appliances convert to other forms of energy in one second
Voltage rating
The voltage the appliances is designed to be used with
Usage
Unit of kilowatt-hour (Kwh)
Energy=power*time
Cost 1 Kwh of electrical energy
Cost of electricity
Wastage
Reducing the use of electrical appliances
Using energy-efficient electrical appliances
Electrical Circuits
Series
Components are connected in a single path
The current is the same at every point
The voltage across the power sources is the sum of the voltage across the other components
parallel
Components are connected to form two or more paths
The current through the power source is the sum of the currents in separate branches
The voltage across the power sources is the same as the voltage across separate branches
The effective resistance decreases when the number of resistors connected increases
Household appliances
Switched on and off individually and unaffected by other faulty appliances
Circuit symbols
power source
cell
battery
switch
lamp
resistor
fixed
variable
bell
Fuse
Meter
ammeter
Voltmeter