# Sci 8 Electricity Test

### 35 terms by Stephy33

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### conductor

allows electricity to flow

### insulator

a material that does not allow electrons to flow

### circuit

a complete path of electrons

### static charge

to many electrons or not enough

V=RxV

### electric current

the amount of electrical flow

### potentioal difference

push that drives the electrons through the circuit

### electric power

P=VxI measered in watts

### static discharge

When electrons jump from one thing to another

### electrical resistance

The opposition to the flow of current

### battery

provides potential difference

### photocell

Device that converts light energy into electrical energy

### thermocouple

measures used for really high temperatures

measers current

### voltmeter

measures potential difference

### lamp

changes electrical energy into heat and light

### longer wire or thinner wire

more resistence comes from this type of wire

### Shorter wirer or thicker wire

less resistence comes from this type of wire

### 1

How many electrolights in a battery

### 2

How many electrodes in a battery

### Static electricity

electricity that does not flow

similar charges

unlike charges

### negativly

Substances become ________ charged if they gain electrons

### positivly

Substances become ________ charged if they lose electrons

### An atom

has a positivly charged nucleaus surronded by fast moving negativly charged electrons

dry cell battery

### 4

A 6 volt battery has _ leclanche cells

### 6

A 9 volt battery has _ leclanche cells

### 1

A 1.5 volt battery has _ leclanche cells

### same

current is _______ every where around a series circuit

In a seriese curciut potential difference ___ to the potential difference of a battery

### same

The potential difference across a parellel circuit is ______

### conventional current

current that moves counter clock wise ( out of the positive side of the battery isn't true because only electrons move)

### electron flow

current that moves clock wise (the real electron flow)

Example: