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If the electric field due to the excess charge on the Earth points downward what type of charge does the Earth carry?
Wiki User
∙ 11y ago
negative
Wiki User
∙ 11y ago
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Earth's surface has an excess amount of negative charge?
Yes the Earth has a vertical electric field that points down. So if you were to try and calculate the amount of excess charge on the Earth's surface, you would get a negative value.
What is the denotative meaning of the word earth?
(points downward)
What is meant by electric field intencity?
An electric field can be represented diagrammatically as a set of lines with arrows on, called electric field-lines, which fill space. Electric field-lines are drawn according to the following rules: The direction of the electric field is everywhere tangent to the field-lines, in the sense of the arrows on the lines. The magnitude of the field is proportional to the number of field-lines per unit area passing through a small surface normal to the lines. Thus, field-lines determine the magnitude, as well as the direction, of the electric field. In particular, the field is strong at points where the field-lines are closely spaced, and weak at points where they are far apart. Electric Field intensity It was stated that the electric field concept arose in an effort to explain action-at-a-distance forces. All charged objects create an electric field which extends outward into the space which surrounds it. The charge alters that space, causing any other charged object that enters the space to be affected by this field. The strength of the electric field is dependent upon how charged the object creating the field is and upon the distance of separation from the charged object. In this section of Lesson 4, we will investigate electric field from a numerical viewpoint - the electric field strength. An electric field can be represented diagrammatically as a set of lines with arrows on, called electric field-lines, which fill space. Electric field-lines are drawn according to the following rules: The direction of the electric field is everywhere tangent to the field-lines, in the sense of the arrows on the lines. The magnitude of the field is proportional to the number of field-lines per unit area passing through a small surface normal to the lines. Thus, field-lines determine the magnitude, as well as the direction, of the electric field. In particular, the field is strong at points where the field-lines are closely spaced, and weak at points where they are far apart. Electric Field intensity It was stated that the electric field concept arose in an effort to explain action-at-a-distance forces. All charged objects create an electric field which extends outward into the space which surrounds it. The charge alters that space, causing any other charged object that enters the space to be affected by this field. The strength of the electric field is dependent upon how charged the object creating the field is and upon the distance of separation from the charged object. In this section of Lesson 4, we will investigate electric field from a numerical viewpoint - the electric field strength.
What do you call a lightning bolt coming from the ground?
Lightning is an electric current. Within a thundercloud way up in the sky, many small bits of ice (frozen raindrops) bump into each other as they move around in the air. All of those collisions create an electric charge. After a while, the whole cloud fills up with electrical charges. The positive charges or protons form at the top of the cloud and the negative charges or electrons form at the bottom of the cloud. Since opposites attract, that causes a positive charge to build up on the ground beneath the cloud. The grounds electrical charge concentrates around anything that sticks up, such as mountains, people, or single trees. The charge coming up from these points eventually connects with a charge reaching down from the clouds and hit the highest point. There isn't any lightning that originates from the ground.
How are magnet fields and electric fields alike?
Both act only on charged particles (ions, protons, or electrons). ?However, an electric field (which generates an ELECTRIC FORCE) acts on a particle in the same direction as the field, given by the equation:F(vector) = q*E(vector)The resulting force vector is in the same direction as the field vector (for positive charges).A magnetic field generates a force ONLY on a MOVING charge, and ONLY if the charge is moving non-parallel to the magnetic field:F(vector) = q*v(vector) x B(vector)Because of the cross-product, the magnetic force is a direction perpendicular to the velocity and magnetic field vectors (use the right hand rule to figure out the direction of magnetic force). ?The particle will still have momentum from its initial velocity, so an applied magnetic field will (pretty much) always make the particle move in a curved path.
Earth's surface has an excess amount of negative charge?
Yes the Earth has a vertical electric field that points down. So if you were to try and calculate the amount of excess charge on the Earth's surface, you would get a negative value.
Is voltage an excess accumulation of electric charge?
Sort of ... 1) Voltage is ALWAYS a comparison, thus it requires two reference points. 2) Its the density of the charge that counts, thus a gigantic charge over a very large area would result in a low voltage.
What is true about an electric field around a positive charge?
It will be directed away from the positive charge. It will attract any other negative charge and repel any positive charge. Its magnitude is given by E= KQ/R where K = 9x 109 C2m-2N-1 Q is the charge producing field R is the point where electric field is to be calculated
Electric field is positive or negative?
Did you mean "The strength of electric field is positive or negative"? Anyway, there is your answer.. The strength of an electric field E at any point is defined as the electric force F exerted per unit positive electric charge q at that point, or E = F/q.You can say that it is positive.
The electric field of a point charge always points away from the charge?
If the given point charge is of positive one then the field points away from the charge. This is because we define the field at a point as the FORCE acting on unit POSITIVE charge. Like charges have to repel and hence the direction. If, other wise, the point charge is negative then electric field due to this negative charge would be towards the negative and not away from it.
Where would you charge an electric car?
There are many places where one is able to charge an electric car. Most people tend to charge at home. However, there are three different types of charging stations. Typically, these are grouped into slow, fast and rapid charging points. 'Slow' points take 6-8 hours to fully charge an average electric car 'Fast' points take 3-4 hours 'Rapid' points take around 30 minutes to give an 80 per cent charge For up-to-date information regarding UK charging points see the Sources and related links section, below.
What is volt of electricity?
Voltage is the measure of the electric potential difference between two points in an electric circuit. It is the amount of potential energy per unit charge available to move electrons from one point to another. Voltage is measured in units called volts, symbolized by the letter V.
What is the relation between energy and charge?
The relationship between energy and charge is potential difference or voltage. Where a volt is defined as existing between two points in an electric field when one joule of energy is required to move a charge of one coulomb between the two points.
Is it true for an electric current to flow only if two objects have a different charge?
Only if there is a potential difference between two points, does the charge move specifically in a direction.
In an electric field 0.90 J of work is required to bring 0.45 C of charge from point A to point B. What is the electric potential difference between points A and B?
nn
What is true about current it is related to voltage and resistance by ohms law it is the flow of electric charges it is the excess accumulation of electric charge?
Electromotive force, or voltage, is measured in volts. It makes current flow in electric circuits. It is related to current and resistance by Ohm's law. And I don't know what you mean by "excess accumulation of electric charge"... Voltage is energy per charge, or joules per coulomb. That energy overcomes resistance in ohms and forces a current in coulombs per second (amperes) to flow. This is ohm's law; that one volt is one ampere divided by one ohm. Voltage is measured as a potential difference between two points, whereas current is a charge passing a single point. In moving from one level of energy to another, that charge does work. The watt is one joule per second, and is also volts times amperes. Have I clarified it enough, or do you need more information?
Do electric fields point outward or inward?
We define the "direction"of an electric field to be the direction of the force it exerts on a positive test charge placed in the field. So if there is some charge inside a shell, the field outside the shell points outward if the charge inside is positive, and inward if the charge inside is negative.
