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 (Ampere) | 0.5 | 1.0 | 2.0 | 3.0 | 4.0 |
| V (Volts) | 1.6 | 3.4 | 6.7 | 10.2 | 13.2 |
Plot a graph between V and I and calculate the resistance of that resistor.
1 Answer
Solution :-
The plot between voltage and current is known as IV characteristic. The current is plotted in the y-axis, while the voltage is plotted in the x-axis. The different values of current for different values of voltage are given in the table. The I and V characteristics for the given resistor is shown below.
The slope of the line gives the value of resistance.
The slope can be calculated as follows:
Slope = 1/R = BC/AC = 2/6.8
To calculate R,
R = 6.8/2 = 3.4 Ω
The resistance of the resistor is 3.4 Ω
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