An open circuit consists of a 12 uF parallel plate capacitor charged to 200 V and a 10 Ohm resistor. At the instant when a switch closes the circuit (with no battery in it) the displacement current between the plates of the capacitor is

not too sure thinking it will always be directed towards the centre of the earth. could be wrong not sure

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

grav forces affect all objects magnetic forces affect magnetic objects and electric currents