Electrical Energy Review

5. A material that allows a current to pass
8. The unit of voltage; symbol V
12. A device that increases or reduces voltage
14. A solution or wet paste containing dissolved chemicals that conducts electricity and completes the circuit in an electrochemical cell
15. ___________ current (DC)- the current generated by electrons always moving in one direction
18. Death by electricity
20. A measure of the amount of energy provided; measured in volts (V)
22. An instrument that measures current Ampere: the unit of current; symbol
24. The flow of charge
25. The parts of a circuit
26. Circuit _______ - shows how all components in the circuit are connected
27. Circuit _______- a switch that turns off a circuit if too much current flows through it

1. Electric _________ - the path down which charge flows
2. A material that blocks current
3. __________ current (AC)- the current generated by electrons changing the direction in which they move
4. _______ wire - a wire that carries current to a component; it is coated in brown plastic
6. A solar cell; directly converts solar energy into electrical energy
7. A wire of high resistance; it will melt if too much current flows in the circuit
9. A cell / ‘mini-battery’ that uses chemicals and redox reactions to generate electrical current
10. A circuit that has a number of branches, each with its own components
11. ________ wire- a wire through which current only flows when there is a leak of current in an appliance; it is coated in yellow and green plastic
13. A circuit with all its components arranged in a line, forming a single loop
16. An instrument that measures voltage
17. ______ switch- a device that turns all household circuits off if it detects a leak in current; it is also known as a residual current device (RCD)
19. A measure of how difficult it is for current to pass; measured in ohms (Ω)
21. The unit of resistance; symbol Ω
23. A ________ wire carries current away from the component; it is coated in blue plastic