In relativity, this statement is equivalent to setting the covariant derivative of the Faraday tensorto zero.
In relativity, this statement is equivalent to setting the covariant derivative of the Faraday tensorto zero. This statement follows from the gauge invariance of the electromagnetic field. One method ofderiving this statement is to take the divergence of both sides of Ampere's law. Applying thecontinuity equation to the current density yields this result. Implications of this statement includeKirchhoff's junction (*) rule, which states that the total current flowing into a junction equals the totalcurrent out, and the fact that a neutral atom emitting an electron will become positive. This concept isdemonstrated by rubbing a glass rod with a piece of fur. For 10 points, identify this statement that thenumber of coulombs in a volume remains unchanged.
In relativity, this statement is equivalent to setting the covariant derivative of the Faraday tensorto zero.
conservation of electric charge [or equivalent answers like charge conservation; prompt on "continuity equation" before mention]