Which of the following statements describes a decrease in voltage?

Question

idkwut · Answer

a. A positive charge moves along an equipotential line.

b. A positive charge crosses equipotential lines toward the source charge.

c. A positive charge moves across an equipotential line away from the source charge.

idkwut · Answer

@Nali

idkwut · Answer

Sorry, I thought I had posted the picture. For the electric field shown with a positive source charge, which of the following statements describes a decrease in voltage?

And forgot to post option d which is "You cannot tell from the given information."

nali · Answer

|dw:1398396664381:dw|

nali · Answer

|dw:1398396831413:dw|

nali · Answer

sorry meant a postivie charge like above but anyway it actually does not matter if the charge is positive or negative, voltage increases when it becomes closer to another charge so it is choice C

idkwut · Answer

@nali Among these items, which of them is MOST easily grounded? plastic foam plate, rubber tire, PVP tire, copper rod?

nali · Answer

I do not know about a PVP tire I only know of PCV

idkwut · Answer

sorry, that's a typo. I meant PCV

nali · Answer

ok, plastic foam plate and rubber seem reasonable answers