Ohm’s Law
Joey Rodriguez
Partner: Daniel Jepson
Physics 1430  Section C2
Performed On: 8/28/07
T.A. Preet Sharma
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In this experiment, we were trying to determine whether Ohm’s Law was
accurate according to the data we collected.
In order to do this we needed to
determine the resistivity of a metal wire.
We did this by setting up a circuit
in which the wires were connected to a power source, which were in turn
connected to a voltmeter and ammeter.
We then probed it at different
locations and took various measurements.
We calculated the average
resistance to be 2.68
Ω
.
Then we found the wires cross sectional area and
length in order to complete our equation for resistivity (
ρ
=(RA)/L).
The
resistivity was found to be 1.9 x 10^7
Ω.
m.
Our data indeed proved that
if the temperature of the conductor remains constant, the potential difference
across its terminals and the current through it is directly proportional.
We
also determined the wire to be made of steel.
All in all, our experiment
conclusively proved Ohm’s Law.
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 Spring '08
 Yost
 Physics, Potential difference, ohm, Electrical resistance

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