What does the p mean in 1s22s22p63s! ?
o the p shell
o one of the 4 sub-shells
o always represents the outermost shell

its 1s2 2s2 2p6 3s2 3p6 , it goes in that order.

p represents the p orbital , which can accomodate a maximum of 6 electrons.

r=rho l/a where a is the area, l is the length and rho is resistivity so the greater the area the lesser the resistance thats why the earth pin is thicker bcos current follow the shortest path, so less resistive .

probably not the "magnets"in the magnet, so to speak, are thought to be electrons orbiting in shells. vurrent loops two sides to the loop