Section D: Give a long answer to the question given below.
 
36. (a) State Ohm's law.

(b) Name and define the physical quantity determined by the slope of V - I curve given in the diagram. Use this graph to find the value of this physical quantity in SI units.
 
2.jpg
 
Establish the relationship between \(1\ kWh\) and \(1\ joule\).
 
(a)  Ohm's law states that, at a constant temperature, the steady current '\(I\)' flowing through a conductor is to the potential difference '\(V\)' between the two ends of the conductor.
 
Ohm's law states that .
 
(b) The slope of V-I graph gives the of the conductor. 
 
From the graph, we can see that the slope of the line is equal to
 
(c) 1 kWh is equal to .