a) state Ohm's law
b) describe the activity with the help of diagram to establish the relation between current flowing in a conductor and potential difference mintaianed across Its ends
c)draw a shape of a curve obtained when a graph is plotted between I and V
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a) Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points.
b) 1. Set up an electric circuit consisting of a 0.5 m long nichrome wire xy, an ammeter, a voltmeter, and four cells of 1.5 V each.
2. First we connect the one cell to circuit and take the reading of ammeter A and voltmeter V for the potential differences across the wire.
3. Then connect the rest of the cells to the circuit and collect the readings of the ammeter and voltmeter respectively.
4. Plot the graph between V and I. The V- I graph is a straight line pssing through the origin. Output: V is directly proportional to I.
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