Physics, 01.08.2019 16:30 Aethis

Two particles, each carrying positive charge q, are on the y axis, one at y=+a and the other at y=−a. calculate electric field for any point on the x axis

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Answer from: ricksterv5000

The field for any point on the x-axis will determined as $E = \frac{kq}{4a^2+ x^2}$

The given parameters;

charge of each particle, = qthe position of one charge = + aposition of the second charge = -a

The electric field between these charge is determined by applying Coulomb's law as shown below;

$E = \frac{kq}{r^2}$

where;

r is the distance between the charges

The resultant distance at any point in the x-axis is calculated as follows;

$r^2 = (a- -a)^2 + (x)^2\\\\r^2 = (2a)^2 + (x)^2\\\\r^2 = 4a^2 + x^2$

The electric field is calculated as follows;

$E = \frac{kq}{r^2} = \frac{kq}{4a^2 + x^2}$

Thus, the field for any point on the x-axis will determined as $E = \frac{kq}{4a^2+ x^2}$

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Answer from: angelinaranee15

The electric field produced by a single particle of charge q is given by:
$E(r)=k_e \frac{q}{r^2}$
where k_e

is the Coulomb's constant, and r is the distance of the point we are measuring the field from the particle.

The problem asks to calculate the electric field for any point on the x-axis. Let's start with the charge located at y=+a. Let's take a generic point on the x-axis: this will have coordinates (x,0). Therefore, the distance of this point from the charge will be
$r= \sqrt{x^2+a^2}$
And so, if we substitute this into the formula of the electric field, we have
$E_1 = k_e \frac{q}{x^2+a^2}$

For the second charge, the electric field is the same. In fact, the second charge is also +q. It is located at y=-a, therefore the distance from the generic point x will be
$r= \sqrt{x^2+(-a)^2} = \sqrt{x^2+a^2}$
And so, the field generated by charge 2 is
$E_2=k_e \frac{q}{x^2+a^2}$

so, the total field is
$E_{tot}(x) = E_1 + E_2=2k_e \frac{q}{x^2+a^2}$

Answer from: Quest

As newton's first law states a object in motion stays in motion

Answer from: Quest

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia

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Two particles, each carrying positive charge q, are on the y axis, one at y=+a and the other at y=−a...