Briefly answer each of the following questions in 2-3 sentences. Do electric fie

Question

Briefly answer each of the following questions in 2-3 sentences. Do electric field lines point along the trajectory of moving particles that are positively charged? Why or why not? An electron and a proton are released in a region of space where the electric field is vertically downward. How do the electric forces acting on the electron and proton compare? Does inserting a dielectric into a charged and isolated capacitor increase or decrease the energy stored in the capacitor? Explain your answer.

Explanation / Answer

i)

Electric field line is the path followed by a unit positive charge in the electric field. That means electric field lines point along the trajectory of moving positively charged particles

ii)

The electric force on the electron will be directed in the upward direction and that on the proton will be directed in the downward direction

iii)

Inserting a dielectric material, increases the capacitance of the capacitor and hence the energy stored in the capacitor increases

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