Part a what is the power dissipated across a 1 mohm, Ask an Expert

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Part a: What is the power dissipated across a 1 Mohm resistor when 1000V is placed across it? using a poynting vector (then compare to the calculation using Ohm's law)

Part b: Electromagnetic waves propagate through what? What is oscillating? What determines the velocity c in free space?

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