Question

The values of current I flowing in a given resistor for the corresponding values of
potential difference V across the resistor are given below –
I (amperes) 0.2 0.4 0.6 0.8 1.0 1.2
V (volts) 0.1 0.2 0.3 0.4 0.5 0.6
Plot a graph between V and I (in graph paper)and calculate the resistance of that
resistor.

Answer 1

Answer: From Ohm's Law, V=IR

                             R=  v/1  

which is nothing but the slope of V−I curve,  

hence R=5 ohm