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What forces attract a positive charge towards a negative charge?
Charges create an electric field around them. This electric field creates a force that attracts or repels other charges. The field attracts opposite charges or repels same charges. The force F= q1q2 zc/2r2 .
Why does test charge moves with zero acceleration to any point in the electric field?
They don't. If there is an electric field, any electric charge will be subject to a force, and therefore to an acceleration. Only in the special case that the charges are on the surface of a good conductor, they won't move because the charges quickly move to a state of equilibrium. In other words, once such a balance is reached, they won't move around any more.
Gets stronger as you get closer to an electric charge?
The electric field gets stronger as you get closer to an electric charge.
What causes the electrons to flow?
hi I'm Adrianna; i have to say it would definitely be a current because without the current it wouldn't be able to flow. Voltage, actually. The voltage is similar to the pressure in a pipe and is sometimes called Electro-Motive Force (EMF). The current is how much flow there is and would be analagous to the volume of water delivered, as in gallons per minute.
Does electric field and electric field lines connected?
Yes. An electric field is represented by electric field lines. Electric field lines are a visual representation of the strength and direction of an electric field in a region of space. In the vicinity of any charge, there is an electric field and the strength of the electric field is proportional to the force that a test charge would experience if placed at the point. (That is a matter of definition of electric field.) Mother nature produces electric fields, but humans can not see electric fields. Humans invented the idea of field lines to create a mental picture of the field. The two most common ways are to draw lines in space or to draw a collection of arrows in space. In the case of arrows, they are vector representations of the strength and direction of the electric field at the point in space where each arrow is drawn. Representing an electric field (and this works with other fields also) with lines is a sophisticated and time honored tradition. The density of lines in any region of space is proportional to the strength (magnitude) of the field in that region of space. The direction of the field is along the direction of the line at each position on each of the lines. In such a graphical representation the field direction goes out from positive charge and in towards negative charge and the visualization usually has some indication of the sign of charge or direction of the field to give the information about direction of the vector field represented by the field lines. There is a small caveat. It is not only charge that can produce electric fields. An electric field can be produced by a changing magnetic field. This is technologically important (since electric motors work on this principle) and scientifically fascinating, requiring a somewhat more sophisticated aspect of electromagnetic theory, but ultimately the electric field or electric flux can be visualized with lines (or arrows) in a manner exactly as is done for stationary charges.
What type of magnetic field will produce an electric current in a wire?
A current carrying wire has a magnetic field around it but no electric field.There will be electric field around a body only if it has static electricity.In this wire, charges(electrons) are moving.The number of charges entering is equal to number of charges leaving the conductor.So it remains neutral.A neutral body cannot have an electric field around it. ACTUALLY, there IS also an electric field. A current is made up of moving charges, and all charges (moving or static) create an electric field. Materials that have a neutral charge are not good conductors and therefore would not have a current going through them in the first place.
What forces attract a positive charge towards a negative charge?
Charges create an electric field around them. This electric field creates a force that attracts or repels other charges. The field attracts opposite charges or repels same charges. The force F= q1q2 zc/2r2 .
What is the Difference between dielectric and insulator?
The difference between dielectric and insulator lies in its field of application.Dielectrics are used to store the electric charges, while insulators are used to block the flow of electric charges ( they more or less act like a wall).While all dielectrics are insulators (they don't allow the flow of electric charges through them) all insulators aren't dielectric because they can't store charges unlike dielectrics.
Why does test charge moves with zero acceleration to any point in the electric field?
They don't. If there is an electric field, any electric charge will be subject to a force, and therefore to an acceleration. Only in the special case that the charges are on the surface of a good conductor, they won't move because the charges quickly move to a state of equilibrium. In other words, once such a balance is reached, they won't move around any more.
Gets stronger as you get closer to an electric charge?
The electric field gets stronger as you get closer to an electric charge.
What causes the electrons to flow?
hi I'm Adrianna; i have to say it would definitely be a current because without the current it wouldn't be able to flow. Voltage, actually. The voltage is similar to the pressure in a pipe and is sometimes called Electro-Motive Force (EMF). The current is how much flow there is and would be analagous to the volume of water delivered, as in gallons per minute.
Does electric field and electric field lines connected?
Yes. An electric field is represented by electric field lines. Electric field lines are a visual representation of the strength and direction of an electric field in a region of space. In the vicinity of any charge, there is an electric field and the strength of the electric field is proportional to the force that a test charge would experience if placed at the point. (That is a matter of definition of electric field.) Mother nature produces electric fields, but humans can not see electric fields. Humans invented the idea of field lines to create a mental picture of the field. The two most common ways are to draw lines in space or to draw a collection of arrows in space. In the case of arrows, they are vector representations of the strength and direction of the electric field at the point in space where each arrow is drawn. Representing an electric field (and this works with other fields also) with lines is a sophisticated and time honored tradition. The density of lines in any region of space is proportional to the strength (magnitude) of the field in that region of space. The direction of the field is along the direction of the line at each position on each of the lines. In such a graphical representation the field direction goes out from positive charge and in towards negative charge and the visualization usually has some indication of the sign of charge or direction of the field to give the information about direction of the vector field represented by the field lines. There is a small caveat. It is not only charge that can produce electric fields. An electric field can be produced by a changing magnetic field. This is technologically important (since electric motors work on this principle) and scientifically fascinating, requiring a somewhat more sophisticated aspect of electromagnetic theory, but ultimately the electric field or electric flux can be visualized with lines (or arrows) in a manner exactly as is done for stationary charges.
Does an electric field get weaker the closer you get to the charge object?
No. The strength of the electric field remains unchanged regardless of your proximity. However, the effects of the electric field on you are more pronounced as you move closer to it.
How does electricity produce motion?
In an electric motor electricity is used to create a moving magnetic field which forces the shaft of the motor turn. For more details see the 'how stuff works' web site for electric motors.
Under what circumstances can electrical charges produce a magnetic field?
Yes, a moving electric charge creates a magnetic field around its path of travel, and this is true for any charged particle. Further, it is the basis for the idea that the electromagnetic force is one force. Physics views electric fields and magnetic fields as being derived from just that one force we mentioned. When we see charges moving continuously, we will see a "standing" magnetic field around the current path. And the magnetic field can be made to do many useful things. This is the idea behind almost all electric power generation around the world as well as countless electronic applications.
When there are two or more charges the electric fields of each individual charge what by repelling or attracting?
Combine
What is the definition of the term dielectric?
'Dielectric' is often used in a general sense to refer to a material (such as ceramic, mica, plastic or paper) which is a poor conductor of electricity. This term is used in the classical description of a capacitor -- two electric conductors separated by a dielectric. By applying electric charge to one conductor an electric field is created. The dielectric allows the electric field to pass through it and affect the other conductors; however the dielectric prevents electrons from flowing between the conductors, so the electric field remains (and the charge remains stored on the conductor). [Side note for beginners: An electric field creates a force (measured in Volts) upon an electron or charged particle which tends to make it move. The conductor allows electrons to move easily within it. The dielectric resists the movement of electrons in it.] More generally, we speak of a 'Dielectric Field' as a mathematic description of how electric charge influences the properties of the space around it. The Dielectric field interacts with space and with any material in the space to create an 'Electric Field'. In simple terms, the electric field at any point is the product of the dielectric field at that point and the 'Dielectric Constant' of the material at that point. In more general terms, the 'electric field vector' at a point is the tensor product of the 'dielectric field vector' and the 'dielectric tensor' of the material at that point. The dielectric field is not a measurable entity, but rather a mathematical tool that allows us accurately to model the electric field, which is measurable. The article on Dielectrics at http://en.wikipedia.org/wiki/Dielectric provides more description, especially on the dielectric field model.
