The Kinetic energy of molecules of a gas increases with​

temperature

Explanation:

suppose a volume of gas is in a container and more heat is applied, the molecules gain kinetic energy and begin to move and collide with each other and the walls of the container

kinetic energy increases with rise of temperatures

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 .

when it gains or loses electrons