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Expert-verifiedHow far apart are two conducting plates that have an electric field strength of \(4.50 \times {10^3}\;V/m\) between them, if their potential difference is \(15.0kV\)?
The two conducting plates that have an electric field strength of \(4.50 \times {10^3}\;V/m\) between them is \(3.33\;m\)apart.
The potential difference between two points separated by a distance \(d\) in a homogeneous electric field of magnitude \(E\) is \(\Delta V = Ed{\rm{ }}......(1)\).
\(E = 4.50 \times {10^3}\;V/m\).
\(\begin{aligned}{}\Delta V &= (15.0kV)\left( {\frac{{1000\;V}}{{1kV}}} \right)\\ &= 1.50 \times {10^4}\;V\end{aligned}\).
The distance between the two plates is found by solving Equation \((1)\) for \(d\) :
\(d = \frac{{\Delta V}}{E}\)
Entering the values for \(\Delta V\) and \(E\), we obtain:
\(\begin{aligned}{}d &= \frac{{1.50 \times {{10}^4}\;V}}{{4.50 \times {{10}^3}\;V/m}}\\ &= 3.33\;m\end{aligned}\)
Therefore, the distance between two plates is \(3.33\;m\).
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