# ICS- Ch 13, Electricity

## 18 terms · Ch 13, Electricity

### electricity

Energy made available by the flow of electric charge through a conductor.

### voltage

The AMOUNT of electric current that can flow through an object.

### current

The flow or speed of an electric charge through an object.

### attraction

When opposite poles come together

### repulsion

When like poles push away from each other

### negative charge

A charge that occurs when an object has MORE electrons than protons

### positive charge

A charge that occurs when an object has FEWER electrons than protons.

### conductor

A material that easily transfers an electrical charge, such as the copper wire.

### insulator

A material that does NOT transfer an electrical charge, such as the plastic around these wires.

### transfer

To move from one place to another.

### friction

another word for rubbing. It can slow the movement of electricity in a light bulb.

### cell

Something that is the source of an electric current, such as a battery.

### resistance

Friction inside a light bulb that slows the movement of electricity.

### 3

The voltage is 21 V, and the current (I) is 7 A. Find the resistance.

### 20

The voltage in a radio is 120 V, and the current (I) that runs through it is 6 A. Find the resistance.

### 7

The resistance in a light bulb is 8 ohm. The voltage is 56 V. Find the current (I) running through the light bulb.

### series circuit

A kind of circuit with ONE path of charge. If you remove one light bulb, all the other will turn off.

### parallel circuit

A kind of circuit with TWO or MORE paths of electrical charge. If you remove one light bulb, the others will still light up because the electricity can flow