Frequent question: Under what conditions can electric flux be found through a closed surface?

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What condition can the electric flux be found through a closed surface?

Only if the location of each point charge inside the surface is specified.

How do you find electric flux through a surface?

The Electric Flux through a surface A is equal to the dot product of the electric field and area vectors E and A. The dot product of two vectors is equal to the product of their respective magnitudes multiplied by the cosine of the angle between them.

Under what condition is the flux passing through any closed surface maximum?

The electric flux of a surface is maximum when the area vector is parallel to the direction of the electric field.

Under what conditions it is concluded that the net electric flux through a closed surface is zero?

If there is no net charge within a closed surface, every field line directed into the surface continues through the interior and is directed outward elsewhere on the surface. The negative flux just equals in magnitude the positive flux, so that the net, or total, electric flux is zero.

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Under what conditions can the electric flux linked with a surface be positive?

If a net charge is contained inside a closed surface, the total flux through the surface is proportional to the enclosed charge, positive if it is positive, negative if it is negative.

In which of the following cases the flux crossing to the surface is zero?

The net electric flux crossing a closed surface is always zero if and only if the net charge enclosed is zero. The net electric flux crossing an open surface is never zero.

How is electric flux calculated?

Electric flux is the rate of flow of the electric field through a given area (see ). … For a non-uniform electric field, the electric flux dΦE through a small surface area dS is given by dΦE=E⋅dS d Φ E = E ⋅ d S (the electric field, E, multiplied by the component of area perpendicular to the field).

When magnetic flux is maximum?

The magnetic flux through the plane of the coil has its maximum value when this plane is perpendicular to the magnetic field lines between the poles. As the coil turns and the plane of the coil becomes parallel to the field lines, the flux becomes zero.

At which angle electric flux is maximum?

Answer: If the surface is placed perpendicular to the electric field then maximum electric lines of force will pass through the surface. Consequently maximum electric flux will pass through the surface.

In what condition will the magnetic flux through a surface of a fixed area be at its maximum value?

This is illustrated in Figure 17.1. 1 for a uniform horizontal electric field, and a flat surface, whose normal vector, →A, is shown. If the surface is perpendicular to the field (left panel), and the field vector is thus parallel to the vector, →A, then the flux through that surface is maximal.

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