Please see the basics of electrical connections and apparatus.



Voltmeter Ammeter Rheostat Battery Key Resistance | Electrical apparatus Demonstration | OHM'S law
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We see a linear relationship between current and potential difference across the resistor. Here the graph of Potential difference (Y-axis) and current (X-axis) will be a straight line and its slope would give you the value of the resistance. This video also covers some of the concepts related to the division of voltage across the resistance in series connection.Suitable explanation for grade 8-12.