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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) 0.51 2 3 4
V(volts) 1.63.4 6.7 10.2 13.2

Plot a graph between V and I and calculate the resistance of that resistor.

Solution
Verified by Toppr

Plot of I vs V is shown in the figure.
Resistance=1Slope
From the graph, Slope=10.53.41.6=0.278 Ω1
R=1/0.278=3.6 Ω

492109_464850_ans_ac5b463485014a078848494837d8cde2.png

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Similar Questions
Q1
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) 0.51 2 3 4
V(volts) 1.63.4 6.7 10.2 13.2

Plot a graph between V and I and calculate the resistance of that resistor.

View Solution
Q2

The value of current I flowing in a given resistor for the corresponding values of potential difference V across the resistor are given below:

Plot a graph between V and I and calculate the resistance of the resistor.


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Q3
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 as given.
V(volts)0.51.01.52.02.53.04.05.0
I(amperes)0.10.20.30.40.50.60.81.0
Plot a graph between current(I) and potential difference (V) and determine the resistance (R) of the resistor.
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Q4

The value of current flowing in a given resistor for the corresponding values of potential difference across the resistor are given below:

I: 0.5, 1.0, 2.0, 3.0, 4.0

V: 1.6, 3.4, 6.7, 10.2, 13.2

Calculate the resistance of the resistor.

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Q5
(a) What is the ratio of potential difference and current known as?
(b) The values of potential difference V applies across a resistor and the corresponding values of current I flowing in the resistor are given below:
Potential differences, V (in volts) : 2.5 5.0 10.0 15.0 20.0 25.0
Current, I (in amperes) : 0.1 0.2 0.4 0.6 0.8 1.0

(c) Name the law which is illustrated by the above V−I graph.
(d) Write down the formula which states the relation between potential difference, current and resistance.
(e) The potential difference between the terminals of an electric iron is 240 V and the current is 5.0 A. What is the resistance of the electric iron?
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