- A Uniform Electric Field Ed Of Magnitude 1x106 V M 1 1 Mv M 1 Is Set Up Inside A Large Block Of Dielectric Of Relative 1 (85.69 KiB) Viewed 24 times
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A uniform electric field, Ed of magnitude 1x106 V.m-1-1 MV.m-1 is set up inside a large block of dielectric of relative permittivity Er = 3.41. A cavity is cut out of the block in the shape of a short cylinder whose ends are perpendicular to the electric field (b) What is the electric field, EC inside the cavity? Give your answer here in units of MV.m-1 [2 marks] Use scientific notation if necessary in your answers (c) What is the magnitude of the surface density (polarisation P) of induced charges at the flat, end surfaces of the cavity ? Give your answer here in units of C.m2. Use scientific notation if necessary in your answers [2 marks]