question_answer

The values of current (I) flowing through a given resistor of resistance (R), for the corresponding values of potential difference (V) across the resistor are given below:
V (volts	0.5	1.0	1.5	2.0	2.5	3.0	4.0	5.0
I (amperes)	1.0	0.2	0.3	0.4	0.5	0.6	0.8	1.0
Plot a graph between current (I) and potential difference (V) and determine the resistance (R) of the resistor.

 

Answer:

We know that,  \[V=IR\]

From the graph,  \[v=0.5\]

\[I\mathrm{  }=\mathrm{  }0.1\]

\[0.5=\mathrm{ }0.1\times \mathrm{ }R\]

\[\frac{0.5}{0.1}=R\]

\[R=5\Omega \]