HPRF
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Homework Statement
A cavity can only store 1J of EM energy as it reaches dielectric breakdown at 3kV/mm. What dielectric strength would a new gas filling the cavity have if the energy stored was to be 4J.
Homework Equations
U=\frac{1}{2}(epsilon)E2
The Attempt at a Solution
I would use the above equation to find the E field that would result in 4J of energy stored. Can anyone tell me if this is the correct approach to answering this question?
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