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The values of current I flowing in a given resistor for the corresponding values of potential difference V across the resistor are given below ?
| V(volts) | 1.6 | 3.4 | 6.7 | 10.7 | 13.2 |
| A(amperes) | 0.5 | 1.0 | 2.0 | 3.0 | 4.0 |
Plot a graph between V and I and calculate the resistance of that resistor.
Answer :
Answer The plot between voltage and current is called IV characteristic. The voltage is plotted on x-axis and current is plotted on y-axis. The values of the current for different values of the voltage are shown in the given table.
| V(volts) | 1.6 | 3.4 | 6.7 | 10.7 | 13.2 |
| A(amperes) | 0.5 | 1.0 | 2.0 | 3.0 | 4.0 |
The V-I graph is shown below :
the value of resistance R is $$ R = \frac{V}{I} = \frac{4}{1.25} = 3.2 \Omega $$