(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. (c) Establish the relationship between 1 kWh and 1 joule.

Question

Aicharya · Accepted Answer

(a) The potential difference V across the ends of a given metallic wire in an electric circuit is directly proportional to the current flowing through it provided its temperature remains the same. / V alpha I or V = IR (temperature remaining constant) (b) Resistance Resistance is the property of a conductor to resist the flow of charges. R = slope = (y2-y1)/(x2-x1) / V/I = (6-0)/(0.8-0) = 60/8 = 7.5 Ohm (c) 1 kWh = 1000 J/sec x 3600 sec 1 kWh = 3.6 × 10 6 J

(a) State Ohm's Law. (b) Name and define the physical quantity determined by the slope of V – I curve given…

Solution