 around a closed loop is proportional
      to the electric current plus displacement current (rate of change of
      electric field) it encloses.<br>
      The electric flux leaving a volume is proportional to the charge inside.<br>
      The voltage induced in a closed circuit is proportional to the rate of
      change of the magnetic flux it encloses.<br>
      There are no magnetic monopoles; the total magnetic flux through a closed
      surface is zero.
      `,
            latex: `\\begin{aligned}
