Question

If the electric potential at a certain point is zero, does the electric field at that point have to be zero? Explain. PS(please do not write the answer with handwriting)

Answer #1

Need not be, Electric field is zero when ** potential
difference** is zero.

Example:

If there is only a point charge, then the electric potential is conventionally zero at infinity. However, the thing with potential is that you can take it as zero anywhere and you would not be completely wrong.

What matters w.r.t. electric field is that ,

Electric Field = −1/q.dU/dx, where q is charge, U is potential and x is distance from charge.

Now, since U = 0 can be there without dU/dx=0, similarly U can be zero without electric field E being zero.

The electric field is zero at a point along the line joining two
charges. (a) Are the signs of the two charges equal or opposite?
Explain. (b) Can the potential be zero at any point along the line?
Explain.

The electric field is zero at a point along the line joining two
charges. (a) Are the signs of the two charges equal or opposite?
Explain. (b) Can the potential be zero at any point along the line?
Explain.

1. "the electric field in the center of a metal shell is zero, therefore the potential there is also zero". explain why this asseverations incorrect.
2. ''the current takes the path of least resistance''. explain
the errors in this statement.

Electric Fields and Potentials---- lab
A) What does it imply about the electric field when the electric
potential is zero?
B) Using the standard convention that V = 0 infinitely far from
a charge, in the case of a single positive point charge is it ever
possible to find a location where the electric potential is
negative? Reason?
C) The simulation only shows two spatial dimensions whereas we
live in a world with three. What do you think the shapes...

The potential at point P in an electric field is 300 V. (Let's
denote the electric potential energy as UE.)
(a) What is the electrical potential energy of a proton placed
at P, in eV and in joules?
Ue=
Ue=
(b) What is the electrical potential energy of an electron at P,
in eV and in joules?
Ue=
Ue=

Lab 20: Electric Field and Potential
Pre Lab Questions (Part 2)
6. How can you tell from an electric field map whether an
electric field is strong or weak?
7. What would the electric field lines look like if the electric
field was constant?
8. Can there be a point in space where there is an electric
potential but not electric field? Can there be a point in space
where there is an electric field but no electric potential? Explain...

What effects does the metal conductor have on the potential
field? what happen to the electric potential inside the
conductor?

This is from an lab dealing with electric feild and
equipotential lines.
1.If the electric potential between two points is zero, what
does that mean in terms of the electric field in terms of the test
charge?
2. Is the electric field a vector a scalar field? Explain
3. Why must equipotential lines be perpendicular to electric
field lines?
4. How much work is required to move a small test charge along
an equipotential line?
5. Find the electric field...

In which of the following would the electric field be zero?
Please explain why it is zero or it isn't
a) in a region with no charges
b) in a region with a constant magnetic field.
c) in an ideal conductor.

How does the potential difference to generate the electric field
affect the displacement and speed of the particles?

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