Ohm's Law is like a rule that tells us how electricity works. Electricity is like water running through a pipe. The pipe is like a wire, and electricity is like the water.
Ohm's Law says that when electricity moves through a wire, it takes a certain amount of time to travel a certain distance, and it also takes a certain amount of electricity to make the water move. So, if you know how much electricity it takes to move the water through the pipe (the wire), you can figure out how long it will take to travel the distance.
The amount of electricity it takes is called "resistance", and it is measured in units called "ohms". So, if we have a wire with a resistance of 10 ohms, it means that it takes 10 units of electricity to make the water (electricity) move. That's why it is called Ohm's Law!