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Electricity, current, voltage, resistance, Vt=V1=V2=V3..., resistor,…
Electricity
Ohmlaw
Series and Parallel circuits
Resistance calculations
Electronic components
current
Ampere(A)
voltage
Volt(V)
resistance
Ohm
Vt=V1=V2=V3...
1/Rt=1/R1+1/R2+1/R3
It=I1+I2+i3
If one component is faulty the other can still work
resistor
Limit the level of current.
Variable resistor
Can change resistance.
capicitor
Store an electrical charge for a period time.
diode
Has very high resistance in one direction.
LED
Give off lights in electrical equipment.
transistor
Work as electronic switch
LDR
Detect light levels
Thermistor
Used as temperature.
IC
Arrange in different configurations for specific purposes
series
parallel
All components connected on one line
All components controlled by one switch
If one components connected in branches
It=I1=I2=I3=...
Vt=V1+V2+V3...
Rt=R1+R2+R3...
All components connected in branches
All components must operate on the same voltage
Ohm Law state the relationship between current , voltage and resistance
resistance in series
Rt=R1+R2+R3...
resistance in parallel
The combined resistance is smaller than the smallest resistor
1/Rt= 1/R1+1/R2.....
Rt=R1xR2/R1+R2