This quantity is a constant for particles in the inner magnetosphere if the field varies in timescale much longer than the drift period. The phase shift in the Aharonov-Bohm effect is equal to this quantity times electric charge divided by h-bar. (15[1]-5[2])This quantity is (-5[1])equal to the MMF divided by the reluctance, according (-5[1])to Hopkinson's (15[1])law. The derivative of this quantity (15[1])with respect to charge is the (*) memristance. This quantity divided by current is equal to inductance. (-5[3])The integral form of Gauss’s (-5[1])law for magnetism states that this quantity (-5[1])is zero. (10[2])The negative (-5[1])time derivative (10[1])of this quantity is equal to the electric motive force according to Faraday’s law. (-5[1])With (-5[1])an SI unit called the weber, (10[1])for (10[1])10 (10[1])points, (-5[1])identify this quantity that measures the amount of magnetic field (10[1])through a surface. (10[4]0[1])■END■ (10[9])