Electricity basics

3. Unlike charges do this to one another.
6. A straight-line graph tells us this about the relationship between the x and y variables.
11. A component with resistance that (usually)decreases as the temperature rises.
13. Electrical resistance is caused when electrons undergo this type of interaction with stationary atoms.
15. Defined as the rate of flow of electric charge.
16. You get this by dividing the voltage across a component by the current flowing through it.
19. This must be constant for Ohm's Law to apply.
22. The unit of electric current.
23. If you connect a voltmeter in this way your circuit will not work as you expect!

1. A material that has very few "free" electrons.
2. A measure of the amount of energy transferred to or from each unit of charge as it passes through a component.
4. A electric current will (almost) always transfer this type of energy to anything the current passes through.
5. These charged particles are responsible for most electrical phenomena.
6. Ammeters are NEVER connected in this way across a component.
7. The unit of electrical resistance.
8. If the voltage across a component is proportional to the current through it we can use this term to describe the component.
9. A non-ohmic component that only allow current to flow in one direction through it.
10. The unit of potential difference or electromotive force.
12. A material that allows electric charge to flow through it.
14. This is the only other type of particle that plays a part in the flow of electric charge under normal circumstances.
15. The property of matter that enables it to feel forces due to electric and magnetic fields.
17. An electric current transfers this from a source like a battery to a component like a filament lamp.
18. Like charges do this to one another.
20. When two different insulating materials are rubbed together this happens with some of the electrons one of the materials
21. A component designed to allow a current to flow through it that is proportional to the voltage across it.