In hollow rectangular waveguides, waves named for this quantity have the lowest non-zero cutoff frequency in the one-zero mode. For a point charge moving at a uniform relativistic velocity, this quantity becomes “pancake-shaped” by bunching up in the transverse (10[1])direction. (10[1]-5[1])The density (-5[1])of energy stored by this quantity (-5[1])is given by permittivity (10[3]-5[1])over (-5[1])2 (10[2])times this quantity (-5[2])squared. (10[7]-5[2])The component (10[1])of this quantity (10[1])parallel (-5[1])to the surface is constant across a boundary. (10[4]-5[2])That derivation (-5[1])uses that (10[1]-5[1])the flux of this quantity (10[2]-5[1])through (-5[2])a surface (10[5]-5[2])is (-5[2])proportional (10[1]-5[2])only (10[1])to (10[1])enclosed (10[4])charge (10[3])density (10[7]-5[1])according (10[2])to (10[1])Gauss’s (10[1])law. (10[5]-5[4])The (10[2])negative line integral of this quantity gives the scalar potential. (10[2])For 10 points, (10[1])what vector (-5[1])quantity is measured (10[1])in newtons (10[1]-5[2])per coulomb (10[2]-5[4])and (10[1])created by (10[1])electric (10[1])charges? (10[4])■END■ (10[25]0[23])