Notes from the first class:
Since we cannot see electronic, we somehow visualise their behaviour
- Electricity is the set of physical phenomena associated with the presence and flow of electric charge
- electric current: a movement or flow of electrically charged particles, typically measured in amperes
- The electron (symbol: e−) is a subatomic particle with a negative elementary electric charge
- Voltage is the electric potential difference between two points, or the difference in electric potential energy of a unit charge transported between two points
- Static electricity is an imbalance of electric charges within or on the surface of a material
- An ion (/ˈaɪən, –ɒn/) is an atom or molecule in which the total number of electrons is not equal to the total number of protons, giving the atom a net positive or negative electrical charge.
Voltage and current is different so if there is voltage but no current means
*wire thickness depends on how much the current will be only for Ampare, insulation of wire has to be considered by voltage
Differences between Parallel circuit and Series
Series = current is the same but voltage is different
Parallel = the opposite
Power Lamps in series
Voltage is divided into the number of things on unless..
sign wave is okay because it hits 0.
Resistance is the property of a component which …
Measure the resistance by multimeter
look for a gold band or silver(outside of 5%, they get gold band and if they are more than 5% wonky, they put silver label.) / they are not a part of colour code and read the colour from the opposite side
black = 0,
we are not sure how big will the resister. Always measure them.
Resistors value in Series
R = R1 + R2
Recisotors connected in Parallel
R = R1xR2/ (R1+R2)
analog value cannot be the same as math value. We are always okay to the close enough
Conductors = wires which allows current to flow
Copper, silver, copper oxidised but tin doesn’t solder mask = protection for the
carbon film resistor (carbon doesn’t conduct…)
Semi conductor = diode = only flow on direction
Insulator = materials do not conduct any electricity = timber, plastic,