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Home  >>  JEEMAIN and AIPMT  >>  Physics  >>  Class11  >>  Units and Measurement
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If $C$ is capacity and $V$ is the potential across the condenser, what will be the dimensional representation of $\large\frac{1}{2}$$CV^2$

\[(a)\;ML^2T^{-2}A^{-2}\quad (b)\;ML^{-2}T^{2}\quad (c)\;ML^2T^{-3}A^{-2}\quad (D)\;ML^2T^{-2}\]

Can you answer this question?
 
 

1 Answer

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$\large\frac{1}{2}$$CV^2=\large\frac{1}{2}\;\frac{charge}{potential} $$\times (potential)^2$
$\qquad\quad=\large\frac{1}{2}\;$${charge} \times \large\frac{work}{charge}$
$\qquad\quad=\large\frac{1}{2} $$work$
It has same unit as work.
Hence D is the correct answer.

 

answered Jun 15, 2013 by meena.p
edited Jan 9, 2014 by meena.p
 

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