PROCEDURE
The
lab experiment for ohm’s law, series and parallel resistive
circuits, was divided into three sections by me and my lab partners
to measure the current flow and voltage across a resistor as a
function of the supply voltage for the DC supply voltage from 0 to 10
V in steps of 1 V.
The
first section of the experiment measured the current flow in a 10 KΩ
resistor as a function of the supply voltage for a DC supply voltage
from 0 to 10 V in steps of 1 V using a digital multi-meter. From a
pool of resistors we measured each of the resistors with a digital
multi-meter clipped on both ends of the resistor, in other to pick
out the 10 KΩ resistor from the pool. The resistor was connected in
series with a DC voltage source, where the voltage was systematically
increased from 0 to 10 V in steps of 1 V and the respective current
was recorded. Power supply voltage was calculated using the voltage
and current readings obtained.
In
the second section, we replaced the 10 KΩ resistor with a 8.2 KΩ
and 1.8 KΩ resistor in series. Again, we measured each resistor
from the pool to find out which one is the 8.2 KΩ and 1.8 KΩ
resistor, using a digital multi-meter clipped on both ends of the 8.2
KΩ and 1.8 KΩ resistor respectively. The two resistors were
connected in series on a bread board with a DC voltage source, where
the voltage was systematically increased across the 1.8 KΩ from 0
to 10 V in steps of 1 V and the respective current was recorded.
Power supply voltage was calculated using the voltage and current
readings obtained.
Finally
in the third section, we replaced the 8.2 KΩ and 1.8 KΩ resistors
with a 30 KΩ and 15 KΩ resistors in parallel. The 30 KΩ and 15
KΩ resistors
were measured out from the pool of resistors using a digital
multi-meter clipped on both ends of the 30 KΩ and 15 KΩ resistor
respectively. The two resistors were connected in parallel on a bread
board with a DC voltage source, where the voltage was systematically
increased from 0 to 10 V in steps of 1 V and the respective current
flow was measured in the 15 KΩ resistor. The procedure was
repeated, but this time the current flow was measured in the 30 KΩ
resistor. Again, the procedure was repeated and the current flow was
measured entering the 30 KΩ and 15 KΩ resistor combination in
parallel. Power supply voltage was calculated using the voltage and
current readings obtained, in each case.
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