Study the $V - I$ graph for a resistor as shown in the figure and prepare a table showing the values of $I$ (in amperes) corresponding to four different values of $V$ (in volts). Find the value of current $I$ (amperes) for $V=10$ volts. How can we determine the resistance of the resistor from this graph?

Vedclass pdf generator app on play store
Vedclass iOS app on app store
(N/A) Based on the provided $V-I$ graph,we can observe the relationship between voltage $(V)$ and current $(I)$. The table below shows the values of $I$ corresponding to four different values of $V$:
$V$ (volts) $2$ $4$ $6$ $8$
$I$ (amperes) $1$ $2$ $3$ $4$

From the graph,when $V = 10 \text{ volts}$,the corresponding value of current $I$ is $5 \text{ amperes}$.
To determine the resistance $(R)$ of the resistor,we use Ohm's Law,which states $R = \frac{V}{I}$. The resistance is equal to the reciprocal of the slope of the $I-V$ graph,or the slope of the $V-I$ graph itself. Using the values from the graph:
$R = \frac{V}{I} = \frac{10 \text{ V}}{5 \text{ A}} = 2 \ \Omega$.

Explore More

Similar Questions

$A$ cylinder of a material is $10\, cm$ long and has a cross-section of $2\, cm^{2}$. If its resistance along the length is $20\, \Omega$,what will be its resistivity in number and units?

Out of the following bulbs rated $40 \ W, 220 \ V$,$60 \ W, 220 \ V$,and $100 \ W, 220 \ V$,which one will glow the brightest when connected in series to a supply of $220 \ V$?

What do you mean by the heating effect of electric current? Explain the production of heat in a resistor by the flow of electric current through it. Name two devices based on the heating effect of current.

Three resistors $R_{1}$,$R_{2}$,and $R_{3}$ are connected in parallel between points $A$ and $B$. The equivalent resistance $R$ is given by:

What is the process of depositing a layer of gold on silver called?

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial
For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free
For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo