experiment no.1

identifying, testing and combining resistors

Resistors produce voltage across its terminal that is proportional to the electrical current. It is a two terminal electronic component.

v = IR

the first two or three bands to write down. the next band is multiple to added the number. gold multiplier makes one decimal place small. silver makes two decimal point smaller. the last band to right may be tolerance values.in this expirement im going to obtain 6 resistors of different values

im using the colour code to calculate the value of resistors
this including the maximum and minimum tolerence value of each resistor
the value of resistor measuring with multi meter

value (colour code) value (multimeter)

1. 100 ohms 5% 98.3k ohms
2. 560000 ohms 5% 555k ohms
3. 330000 ohms 5% 330k ohms
4. 10000 ohms 5% 9.9k ohms
5. 10000 ohms 5% 99.6k ohms
6. 560000 ohms 5% 566K ohms

Now im choosing two resistors to record their individual ohm resistance value measure with multimeter.

resistor 1: 98.4 ohms resistor 2: 258k ohms

And then i put these two resistors in series.

calculated value 1 and 2 in series: RT=R1 + R2 = 98.4 ohms + 258K ohms = 258.984k ohms

And then i put these 2 resistors in parallel

calculated value of 1 and 2 in parallel: 98.36 ohms

measured value 1 and 2 in parallel: 98.4 ohms

RT= R1 x R2/R1 + R2

what principles of electricity have you demonstrated with this? explain:

in series circuit we added up both resistors resistance to give us the total resistance. Resistance has increased in , but in parallel circuit the total resistance has decreased, an electricity rule in parallal circuit the total resistance must be less than the small resistor value in the circuit.

ie: RT = R1 x R2/ R1 + R2

resistors connected in series, when they are chained together in single line. all current flowing through the first resistor has no other to go out, it must pass through the second resistor

ie: RT = R1+ R2