quiz 1/21 Flashcards Preview

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Flashcards in quiz 1/21 Deck (17):
1

what is electricity?

the flow of electrons from place to place

2

what is a gradient?

a difference in concentration of something

3

what is a current?

the flow of electrons, measured in amps

4

what is resistance?

opposition to the flow of the current, measured in ohms

5

ohms law?

v=ixr

6

what is a series circuit?

only 1 continuous path for the electricity to flow

7

parallel circuit?

multiple paths for electricity to flow?

8

what are the factors that affect resistance?

-diameter of wire
-length of wire
-temp. of wire
-type of wire

9

in a series circuit, what is constant?

current

10

in a paralell circuit, what is constant?

voltage

11

luigi galvani

1780, researched frogs
was dissecting a frog on an iron table
touched brass hook to iron while in frog, made spark

12

alassandra volta

used galvani's research to make the first battery

13

what was the first battery made out of?

layered zinc, salty water paper, and silver

14

what is an electrade?

piece of metal sitting on an electryte

15

what is an electrolyte?

a substance, liquid or paste, that conducts electric current

16

what is a terminal?

the part of the electrolyte that sticks out

17

what is a battery?

a combination of 2 or more electrochemical cells