Electric question, about how to let electricity pass to electric wires from batteries?

Question

ok this is this users son talking i asked for permition im 12

ok im making and electric wats will look like a bb gun but with mettale BB's and with spears but short, i need to know how can i make a gun trigger let electricity paas through from the batteries to the wires that will go to the brass or copper coil i dont remember witch will make a manet and pull a spring that will push a mettal BB but i need to know how to make a trigger let electriciy pass from the batteries to the wire but it has to look exactly like a gun trigger or a water gun trigger it will look like a pistole if you have any ideas please aport them, the reason of this invention is that i feel that my house is going to be robbed and i want to have an arm that wont exantly make a bunch of blood and i dont wat to buy anything becous it will brake with my use. please help me out with this.. it will be my firs invention of the many im gona make when i grow up to be an electromechanic engenier thankyou

Answer 1

I have a lot of difficulty reading your question, which is all run together in one sentence.

You want to build a gun operated by a magnetic coil? This is something you need to know a lot about electricity to design and build. I suggest you find a web site where you can learn about the basics before you tackle anything this complicated. Learn about series and parallel circuits, ohms law, magnetic fields, and ballistics first.

Answer 2

Listen kid, building an electromagnetic gun is not easy and in the case of 12 year old pretty dangerous. You want to be an inventor - that is fine. I suggest you start with something simple and harmless. Leave this project for later. Meanwhile read, read a lot and try to stay out of trouble! :)

PS: It wont hurt  to put a period once in a while.