The values of current (I) flowing through a ...

CBSE Class 10 Science 2018 Solved Paper

Question : 27 of 27

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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)	$0.1$	$0.2$	$0.3$	$0.4$	$0.5$	$0.6$	$0.8$	$1.0$

Plot a graph between current (I) and potential difference

(V)

and determine the resistance (R) of the resistor.

Solution:

We know that,

V=\mathbb{R}

From the graph,

V=0.5

I=0.1

0.5=0.1 \times R

\frac{0.5}{0.1}=R

R=5\,\Omega.

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