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Flashcards in Electricity Deck (23):
1

What is voltage

Electrical pressure (how much energy each electron has

2

What is resistance and give an example

Opposition to the flow of electrons, friction

3

Why does a balloon stuck to a wall if you rub your hair first

Electrons go from you hair to the balloon making t negative and then the positive nuclei are attracted to the balloons electrons so it sticks to the wall by static charge build up

4

What is static electricity

Non flowing electrons

5

What is electric current

Flow of electrons

6

What is coloumbs laws

The force between two charged particles is directly proportional to the amount of charge and inversely proportional to distance squared

7

What does coloumbs law say about distance and strength of attractions between charges

If the amount of charge on two part files doubled the force between then it is twice as much, if the distance is doubled then force between them is 1/4 of what it used to be

8

What happens to the strength of atttaction between two charges particles if distance is doubled

The force between them is 1/4 of what it was before

9

What if the distance is cut in half

4x as much

10

What if the strength of both charges doubled

Then the force is 4x as much

11

What is ohms law

Relationship amount current, voltage and resistance

12

How are pressure and voltage related

More pressure equals more voltage

13

How are voltage and current related

More voltage equals more current

14

How are resistance and current related

More resistance equals less current

15

What is current measured in

Amperes

16

What is resistance measured in

Ohms

17

Voltage measured in

V

18

Two types of static electricity can be made

Static charge build up by friction and static charge build up by induction

19

Induction

Charged caused by electrons changing their position within a substance

20

Series circuit

All loads in a single file line connected by a sequential wires

21

Parallel circuit

Bulbs or loads are not in a single file line more than one path electricity takes to get to the positive end of the battery

22

Current equation

C=v/r

23

What is current

Flow of electrons