What is the relationship between thermal energy.
temperature, and the motion of molecules in a
substance?

The sum of kinetic energy of all molecules present in a body is called heat.

The average kinetic energy of molecules present in a body is called temperature.

magnityde and direction

when the use of electricity burdens the fuse and miniarure circuit beakers and there is a possibility of a fuse then they automatically cut off the electricity supply to your homes and after you fix the problem u jzt switch it on and it continues the supply of electricity to ur homes