Circuits & Electricity

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22 Terms

1

open circuit

An incomplete circuit through which no electrical current flows

<p>An incomplete circuit through which no electrical current flows</p>

2

closed circuit

A complete circuit through which electrical current flows

<p>A complete circuit through which electrical current flows</p>

3

series circuit

A circuit with a single path for current flow.

<p>A circuit with a single path for current flow.</p>

4

parallel circuit

A circuit with two or more paths for current flow.

<p>A circuit with two or more paths for current flow.</p>

5

short circuit

A path in a circuit with zero or very low resistance. Can produce dangerous temperatures or fire.

<p>A path in a circuit with zero or very low resistance. Can produce dangerous temperatures or fire.</p>

6

electric current

The flow rate of electric charges through a material

<p>The flow rate of electric charges through a material</p>

7

ampere

Unit that measures the flow rate of electric current.

<p>Unit that measures the flow rate of electric current.</p>

8

ammeter

Device used to measure current in a circuit

<p>Device used to measure current in a circuit</p>

9

electron volt (eV)

The electric charge of a single electron. It is the smallest unit of electric charge.

<p>The electric charge of a single electron. It is the smallest unit of electric charge.</p>

10

coulomb

Unit that measures the amount of electrical charge delivered in one second.

<p>Unit that measures the amount of electrical charge delivered in one second.</p>

11

voltage

The difference in electrical potential energy between two places in a circuit. Can be thought of as "electrical pressure" that causes current to flow.

<p>The difference in electrical potential energy between two places in a circuit. Can be thought of as "electrical pressure" that causes current to flow.</p>

12

watt

Unit of power equal to one joule of work per second.

<p>Unit of power equal to one joule of work per second.</p>

13

volt

Unit for measuring voltage.

<p>Unit for measuring voltage.</p>

14

electrical resistance

The property of a material that limits the flow of charged particles through it; measured in ohms.

<p>The property of a material that limits the flow of charged particles through it; measured in ohms.</p>

15

ohm

Unit of electrical resistance

<p>Unit of electrical resistance</p>

16

ohmmeter

Device used to measure resistance to the flow of current in a circuit.

<p>Device used to measure resistance to the flow of current in a circuit.</p>

17

resistor

Device that slows the flow of current in a circuit.

<p>Device that slows the flow of current in a circuit.</p>

18

conductor

Material that allows electrical current to pass through it easily.

<p>Material that allows electrical current to pass through it easily.</p>

19

insulator

Material that does not allow electric current to move through it easily.

<p>Material that does not allow electric current to move through it easily.</p>

20

Ohm's Law

An equation that relates voltage, current, and resistance. V=IR Voltage = Current x Resistance.

<p>An equation that relates voltage, current, and resistance. V=IR Voltage = Current x Resistance.</p>

21

fuse

A safety device with a thin metal strip that melts, opening the circuit

<p>A safety device with a thin metal strip that melts, opening the circuit</p>

22

switch

a device that opens or closes a circuit

<p>a device that opens or closes a circuit</p>