Ask Questions, Get Answers

Want to ask us a question? Click here
Browse Questions
0 votes

There is an electric field E in x - direction . If the work done on moving a charge of 0.2C through a distance of 2m along a line making an angle $\;60_{0}\;$ with x - axis is 4J . What is value of E


Can you answer this question?

1 Answer

0 votes
Answer : (d) $\;20\;N/C$
Explanation : $\;W=\overrightarrow{F} . \overrightarrow{r}\quad\;\overrightarrow{F}=0.2 E \hat{i}$
$\overrightarrow{r}=2 cos \theta \hat{i} + 2 sin \theta \hat{j}$
$=\hat{i} + \sqrt{3} \hat{j}$
$W=0.2 E=4$
$E=20 N/C$
answered Feb 6, 2014 by yamini.v

Related questions

Ask Question
student study plans
JEE MAIN, CBSE, NEET Mobile and Tablet App
The ultimate mobile app to help you crack your examinations
Get the Android App