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Solar Flux or Solar irradiance would be a couple of alternatives.
The solar magnetic cycle is driven by the magnetic flux.
Solar flux, often measured in watts per square meter (W/m²), refers to the amount of solar energy received per unit area at a given distance from the Sun. It varies with distance from the Sun and atmospheric conditions, influencing how much solar energy reaches the Earth's surface. Solar flux is critical for understanding solar radiation's impact on climate, weather, and the efficiency of solar power systems. It is commonly assessed using instruments like pyranometers and solar radiometers.
Factors that could affect the amount of sunlight reaching the Earth's surface and decrease the flux of solar energy include increased aerosols in the atmosphere from pollution or volcanic eruptions, cloud cover, latitude (angle of the Sun), and obstructions like buildings or vegetation. These factors can all attenuate or scatter sunlight before it reaches the surface, leading to reduced solar energy flux.
an instrument used to measure the flux of solar radiation through a surface.
same way they do at day.
A "sol", or solar day on Mars, is only about 40 minutes longer than a solar day on Earth. This is by far the closest to being the same as Earth's of any planet in the solar system.
Increased solar flux would do the job nicely.
when a current flow through the coil then flux produced around the coil . if the flux linked same produced coil only then the flux is said to be leakage flux. flux produced by one coil ,but linked with another coil then the flu is said to be mutual flux.
when a current flow through the coil then flux produced around the coil . if the flux linked same produced coil only then the flux is said to be leakage flux. flux produced by one coil ,but linked with another coil then the flu is said to be mutual flux.
In a Transformer, Core flux is the difference of primary flux and Secondary flux which are opposite to each other in direction. There difference is equal to the no load flux at all loads. So, some of primary flux passes through the core and remaining becomes leakage flux (Because Secondary flux forces it to get out of the core). Same is the case with Secondary flux. Now, flux is directly proportional to Voltage and Current. When Current increases due to increased load (and voltage remains same): Then both primary and secondary flux increase. Because both of them increase, so there difference remains same. And all remaining flux is forced out. Hence leakage flux increases with current, but Core flux remains constant. When Primary Voltage is increased: Then only primary flux increases. So difference of this new increased primary flux and previous same secondary flux increases. Hence Core flux increases with voltage, But leakage flux does not. That's how In transformer core flux depends on voltage whereas leakage flux depends on current.
The 'rate of change' applies to the flux itself, and has nothing to do with it linking the primary and secondary windings. There is only one flux, so of course the rate of change is 'the same'.