4. Two dielectric media are separated by a charge free boundary. Medium 1 (z < 0) has relative permittivity of ɛ1 =2.5, and Medium 2 (z>0) has relative permittivity of &2=4. The electric field expression in Medium 1 is given as E1 = -30ax+ 50ay+ 70az V/m. a) Determine D2, b) Find the angle between E, and the normal to the surface.

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A: Here i have solved it.

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Q: Since the potential of a perfect conducting sphere with a radius of 2.7 cm in empty space is 10 V,…

A: I have solved it.

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Q: Since the potential of a perfect conducting sphere with a radius of 3.5 cm in empty space is 10 V,…

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A: Here i have solved it.

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Electric field

A physical field present around an electrically charged particle that exerts a force on all other charged particles is called an electric field. The charged particles present in the field either repel or attract. From electric charges or time-varying magnetic fields, the electric field originates. One of the manifestations of electromagnetic force which is one of the four fundamental forces present in nature are the electric fields and magnetic fields.