Useful tips

Can the flux be zero?

Can the flux be zero?

Electric flux is proportional to the number of electric field lines going through a normally perpendicular surface. so if the electric field is parallel to the surface that means that no electric field is passing normally to the surface and hence the flux is zero.

Is flux equal to current?

It states that current induced opposes the magnetic field. So, a change in flux induces a current and a voltage which is proportional to the rate of change of flux. This fits with Ohm’s Law (V = IR). A current and a voltage in a coil induce a flux which is proportional to the current and the voltage.

What does it mean if magnetic flux is zero?

This means that the net magnetic flux through such a closed surface is always zero and therefore all the magnetic field lines going into the closed surface are exactly balanced by field lines coming out. This fact is useful for simplifying magnetic field problems.

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Is magnetic flux always 0?

While the magnetic flux through a closed surface is always zero, the magnetic flux through an open surface need not be zero and is an important quantity in electromagnetism.

How do you calculate flux?

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.

For which surface is the electric flux zero?

If the surface is parallel to the field (right panel), then no field lines cross that surface, and the flux through that surface is zero. If the surface is rotated with respect to the electric field, as in the middle panel, then the flux through the surface is between zero and the maximal value.

What is flux current?

Flux current, simplistically described, is the portion of the total current which magnetizes the motor. The efficiency of any motor will improve if more of the total current is in phase with the output voltage.

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How do you calculate current flux?

Right hand rule gives the current direction shown, and the polarity of the rod will drive such a current. To find the magnitude of EMF induced along the moving rod, we use Faraday’s law of induction without the sign: EMF=NΔΦΔt EMF = N Δ Φ Δ t . In this equation, N=1 and the flux Φ=BAcosθ.

What is magnetic flux measured in?

Weber
Magnetic flux is a measurement of how many magnetic field lines pass through a certain area, and is measured in Weber in MKS units and Maxwell in CGS units.

What is magnetic flux?

Magnetic flux is defined as the number of magnetic field lines passing through a given closed surface. It provides the measurement of the total magnetic field that passes through a given surface area.