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Flashcards in C10 Terms Deck (58)
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1

Stationary electrical charges and the forces that they exert

static electricity

2

Is much stinger than gravity

electrostatic force

3

Like charges repel unlike charges attract

law of charges

4

The net positive or negative charge is measured in?

coulomb (C)

5

The creation of a charged region on a neutral object when exposed to a nearby electrical charge is?

electrical induction

6

A neutral molecule whose electrons have shifted to from positive and negative ends or poles is?

dipole

7

Changes can be detected with what instrument?

electroscope

8

Materials that offer little resistance to electron motion.

electrical conductor

9

A loss of static charges.

electrical discharge

10

A device used to protect buildings from lightning

lightning rod

11

The first capacitor

Leyden jar

12

A devise that stores electrical charges

capacitor

13

Electricity that involves continuously moving charges is called?

electrical current

14

Most TVs contain a large vacuum tube screen called?

cathode-ray tube (CRT)

15

Electrons that have kinetic energy have?

electrical potential energy

16

The flow of positive charges through a conductor is called?

conventional current

17

Current that flows in one direction is called?

direct current

18

The compleat path from the source of electrons to the end is called?

electrical circuit

19

Something that electricity to some other useful form is called?

electrical load

20

Allows you to open or close the circuit.

switch

21

Consists of one or more electromechanical cells that supply electrons released by a chemical reaction.

battery

22

Supplies electrons released by a chemical reaction.

electrochemical cell

23

We measure potential difference with a unit called?

volt (V)

24

The unit in which electrical current is measured.

ampere (A)

25

The resistance to electrical flow is called?

electrical resistance

26

What changes the voltage of the current in an electrical circuit?

resistor

27

Ohm's law state that.

As the size of the voltage changes the current is directly proportional the the voltage change, and the current is directly proportional to the resistance.

28

The unit that resistance is measured in.

ohm

29

The unit of electrical energy used by utilities to sell electricity.

kilowatt-hour (kWh)

30

What is the term for a circuit that has several loads on one wire?

series circuit