Explain V-I graph Right hand thumb rule Bio ch hereditary & evoulation

1.	Explain V-I graph Right hand thumb rule Bio ch hereditary & evoulation
Answer» Right Hand Thumb Rule: If a current carrying conductor is imagined to be held in your right hand such that the thumb points along the direction of current, then the direction of the wrapped fingers will give the direction of magnetic field lines. Accordingly if current in wire is vertically upward, the magnetic field lines are anticlockwise, while if current in wire is vertically downward, the magnetic field lines are clockwise.V-I graph : After performing experiment for different readings of V & I and recording the observations, if we plot current on the x-axis of a graph and voltage on the y-axis of the graph, we will get a straight-line. The gradient of the straight-line graph is related to the resistance (R) of the conductor.

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