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Here we have to think a little bit. When there is a point charge then the field at a given point at a distance r from the charge say q coulomb will be 9 x 10^9 q / r^2 V /m
But if the charge is distributed over a lengthy wire uniformly then the field at a given point could be found by integration technique or by applying Gauss law.
Hence the field due to a line charge of linear charge density K, the field at a point at distance r from the line will be 18 x 10^9 K / r.
To derive the above expression will be an interesting one which is to be enjoyed by knowing and doing so.
Really Mathematics is the queen of science.
What else can I help you with?
What is the electric field inside an infinitely long cylindrical conductor with radius r and uniform surface charge density?
The electric field inside an infinitely long cylindrical conductor with radius r and uniform surface charge density is zero.
What happens when a conductor is placed in a constant electric field?
When a conductor is placed in a constant electric field, the free charges within the conductor will rearrange themselves until reaching equilibrium. This results in the charges accumulating on the surface of the conductor, creating an induced electric field that cancels out the external field within the conductor. The conductor will then remain in a stable state as long as the external electric field remains constant.
What is the electric field around a very long uniformly charged cylinder?
The electric field around a very long uniformly charged cylinder is uniform and points radially outward from the cylinder.
Why is electric potential inside a ring conductor on a conducting paper that has elctric field zero?
The electric potential inside a ring conductor on a conducting paper is zero because the electric field inside a conductor in electrostatic equilibrium is zero. This is due to the charges redistributing themselves in such a way that the electric field cancels out inside the conductor. Since the electric potential is directly related to the electric field, the potential inside the conductor is also zero.
Which is true of magnetic field lines but not electric field lines?
they show wich way iron shavings would align themselves They always make closed loops. Electric field lines can either form closed loops or they can start and finish on isolated electric charges. Magnetic field lines always only form closed loops.
How long does the electric field extend?
The electric field extends over a distance infinitely, theoretically. However, the strength of the field decreases with distance from the source charge.
What is the electric field inside an infinitely long cylindrical conductor with radius r and uniform surface charge density?
The electric field inside an infinitely long cylindrical conductor with radius r and uniform surface charge density is zero.
How does the electric field between the capacitors change with their separation?
Electric field is got by the expression = charge density / epsilon not As so long charges on the plate remain the same the electric field also remains the same
What happens when a conductor is placed in a constant electric field?
When a conductor is placed in a constant electric field, the free charges within the conductor will rearrange themselves until reaching equilibrium. This results in the charges accumulating on the surface of the conductor, creating an induced electric field that cancels out the external field within the conductor. The conductor will then remain in a stable state as long as the external electric field remains constant.
How long do you have to charge an electric scooter for?
12 hours
How long does a charge last in an electric car?
This completely depends on the model of the electric car.
How long does it take to charge an electric scooter?
1000000.1000000 days
How long does earths magnetic flip take?
An electromagnetic wave is a form of radiation consisting of waves of energy associated with electric and magnetic fields resulting from the acceleration of an electric charge. An electromagnetic wave travels like any other form of radiation or light, except for the fact that an electromagnetic wave moves perpendicular to an electric field and a magnetic field.
What is the electric field around a very long uniformly charged cylinder?
The electric field around a very long uniformly charged cylinder is uniform and points radially outward from the cylinder.
How long to charge oral-b toothbrush?
how long does an oral b electric toothbrush last
What is the relationship between the direction of an electric field and the direction of the force that the field would exert?
The direction of an electric field is the direction of the force that the field would exert on a proton.. ___ The relationship of the direction of an electric field and the direction of force that the field would exert are the same. Let's look. Consider the humble electron, the carrier of the negative electrostatic force. The electric field around the electron can be said to "stand out around the electron" equally and in all directions. We need to form a mental picture, so let's try to do that. Think of the electron as a little ball floating in space. Now picture it with long, thin "needles" sticking out of it in all directions. Each needle is a line of electric force, and its direction is "out" or "away" from the center of the ball that is the electron. Got that picture? The negative electric force about any elementary charged particle is just like the picture we have of the electron and its electric field. The force acts "out" like that. In the case of a positively charged particle, the same model applies, except that positive and negative forces attract while two negative or two positive forces repel each other, just as is set down in the law of electrostatics. Simple and easy. Note that electric and magnetic fields have a little different way of interacting, and this question doesn't cover that.
When marking the field how long is the mark for the field goal line?
2 yds from the goal line but that is where the center snaps it from not where he kicks it from
