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Electricity and Magnetism - Coggle Diagram
Electricity and Magnetism
Mains electricity
Static electricity
elctric charge
measured in coloumbs( C)
electric field
Charging
Inducting conductors
Rubbing insulators
Magnetism
Current electricity
Voltage
V= E/Q where E is energy and Q is electric charge
V= IR where I is electric current and r is resistance
V= P/I where P is electrical power and I is electric current
Electric current
I= Q/t where Q is electric charge and t is time in seconds
I=V/R where V is Voltage and Ris resistance
Resistance
R= V/I where V is Voltage and I is electric current
R = P/ I² where P is electrical power nd I is electric current
Power
P= VI where V is voltage and I is electric current
P= I²R where I is electric curent and R is resistance
P=(V²)/R where R is resistance and V is voltage
P=E/t where E is energy and t is time
Ohm's Law
V=IR at constant temperature
I = V/R at constant temperature
R= V/I at contant temperature
Resistors
Resistor types
Variable resistor
Resistance varis wih voltage
Thermistor
resistance increases with temperate
Light Dependent Resistor
Resistance decreases with light
Fixed resistor
resistance fixed
Diode
A device that allows current to flow in one direction
Electric circuits
Series Circuts or Connection
Total R is greater
I is same through resistors
E.M.F is divided across the devices
Parallel Connections
Total R is Smaller
I divides to all branches
Emf is same in all branches