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There have been a few questions about charged black holes lately, but I think this very basic question about them hasn't been answered yet. Will a charged black hole (let's say non-rotating for simplicity) emit an electric field and why/why not? (I'm ...
Started by JP on
, 25 posts
by 5 people.
Answer Snippets (Read the full thread at thenakedscientists):
And the idea of space and time (let's say non-rotating for... .
Produced by the negative pressure of the radial electric field."
Really?
So (anti) gravity as a "negative pressure of the radial electric field?"
That hurts me head.
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1. The problem statement, all variables and given/known data
An electron with a speed of 5.57 × 108 cm/s in the positive direction of an x axis enters an electric field of magnitude 2.72 × 103 N/C, traveling along a field line in the direction that retards...
Started by C6ZR1 on
, 16 posts
by 2 people.
Answer Snippets (Read the full thread at physicsforums):
With a speed of 5.57 × 108 cm/s in the positive direction of an x axis enters an electric field to the electric field, so its motion will be that of an object undergoing acceleration of magnitude 2.72 × 103 N/C, traveling ....
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Aside from magnetic field, Does a wire carrying current induce also an electric field? If yes, what rule should i use to find its direction?
Started by jaobyccdee on
, 5 posts
by 2 people.
Answer Snippets (Read the full thread at physicsforums):
Can ....
If there are the same number of positive charge and negative charge, then there's no net charge, and thus no electric field?
2.
No, there is no electric field that you can figure out from just knowing the current.
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I've almost certain that I have read/ seen from MIT's OCW that the motion of a charge within an electric field does not follow the field lines.
Today my physics teacher said the opposite, that the path of motion of a charge within a field will follow ...
Started by Excalibur1152 on
, 6 posts
by 2 people.
Answer Snippets (Read the full thread at physicsforums):
If the charge started off with no velocity then it will 'fall' along field lines just the same a trajectory, accelerating in the direction of the field lines, and its velocity will always be the (vector) sum of its original velocity and ....
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According to Gauss, a closed conducting body will distribute the charge to the surface. Since the human body is a conductor does that mean the electric field in our body is zero?
Started by theBEAST on
, 4 posts
by 3 people.
Answer Snippets (Read the full thread at physicsforums):
Nerve impulses etc.
There are lots of local chemical potentials though.
There is no net electric field.
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1. The problem statement, all variables and given/known data
Two point charges Q and -Q are separated by a distance d. The point p forms an equilateral triangle with the two charges of side length d. Find the magnitude and direction of the electric field...
Started by black_hole on
, 5 posts
by 2 people.
Answer Snippets (Read the full thread at physicsforums):
Now I'm confused...If I were to draw it out, the electric field would be going from the positive integrate along the y direction to find the potential at p? I think you may have gotten the E-field.
There.
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1. The problem statement, all variables and given/known data
A mass m that has net electric charge Q is oscillating along the x-direction on one end of a spring (whose other end is anchored) of relaxed length s0. Suppose that someone then swirches on ...
Started by scarletx09 on
, 8 posts
by 2 people.
Answer Snippets (Read the full thread at physicsforums):
The entire system is then immersed in this electric field = Force of the electric....
Suppose that someone then swirches on an electric field E that is uniform in space, constant in time, and which points in the +x direction.
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On Wed, 22 Jul 2009 09:48:57 -0700 (PDT), Sanny <softtanks22@hotmail.com
We know Electric Field is caused by potential difference.
A Battery of 9 volts do not get discharged when connection is broken.
So Electric field needs a good conductor to...
Started by Sanny on
, 14 posts
by 9 people.
Answer Snippets (Read the full thread at omgili):
In Vaccum Tubes Even with high potential difference....
So electric field stops when wire is cut.
What is
the "potential difference" in a zero gradient electric field?
Not expiry dates on batteries as no current flows to
buld.
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On Mon, 27 Jul 2009 16:48:38 -0700 (PDT), Benj <bjacoby@iwaynet.net
On Jul 24, 2:27 am, Sanny <softtank...@hotmail.com
Correct. The electric field represents a force on the electrons
causing them to move.
Correct. No forces. No motion.
Wrong...
Started by Benj on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at omgili):
Such is the Sun ,planets fields
can literally....
Magnetic field is created by virtual
photons and can travel through space.
Electric field is created around the flow of electrons,and electrons
need a conductor to flow through.
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On Wed, 22 Jul 2009 09:48:57 -0700 (PDT), Sanny <softtanks22@hotmail.com
We know Electric Field is caused by potential difference.
A Battery of 9 volts do not get discharged when connection is broken.
So Electric field needs a good conductor to...
Started by Sanny on
, 30 posts
by 16 people.
Answer Snippets (Read the full thread at omgili):
...a time-varying electric....
Electric field is 0 contexts the
entire range is referred to as just 'light'.
Google "self discharge"
Wrong.
The opposite it true.
C2d545-f106-44fe-8119-40fb69b640d9@u16g2000pru.googlegroups.com...
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