explain experimental verification of ohm's law
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a Set up the circuit shown. The length of Eureka wire acts as the resistance in the circuit.
b By adjusting the power supply, you can vary the p.d. across the Eureka wire. The ammeter will show corresponding values of the current through the wire. Keep the current small so that the temperature of the wire does not increase. (Adjust the rheostat at the beginning and then keep it constant.) Record a series of values of p.d. and current.
c Calculate the ratio p.d./current for each pair of values. Comment on the result.
d Draw a graph to represent the same data. From the graph, deduce a value for the ratio p.d./current.
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b By adjusting the power supply, you can vary the p.d. across the Eureka wire. The ammeter will show corresponding values of the current through the wire. Keep the current small so that the temperature of the wire does not increase. (Adjust the rheostat at the beginning and then keep it constant.) Record a series of values of p.d. and current.
c Calculate the ratio p.d./current for each pair of values. Comment on the result.
d Draw a graph to represent the same data. From the graph, deduce a value for the ratio p.d./current.
Hope it's Helpful
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