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Physics > Electrostatic Study Guide > Flashcards

Electrostatic Study Guide Flashcards

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1
Q

Electrostatics

A

The study of electric charges that can be collected and held in one place

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2
Q

Conductor - provide multiple examples

A

A material that allows charges to move about easily
- Ex: copper, plasma, graphite

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3
Q

Insulator

A

A material through which a charge will not move easily
- Ex: dry air, cloth, glass

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4
Q

Name the three main parts of an electroscope

A

A metal knob, metal stem, and light weight metal foils called leaves

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5
Q

What is the Coulomb’s Law Equation

A

F = K q1q2/r^2

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6
Q

What are three applications of Electric Forces

A

laser printers, photocopy machines, and tiny paint droplets

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7
Q

What is the ohm’s law formula, what are the units and symbols

A

V = IR
V = volts
I = current, amps
R = ohms, resistance

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8
Q

What is the difference between superconductors and semiconductors

A

Superconductors face no resistance, while semiconductors have a conductivity between conductors and insulators

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9
Q

What are the four things that can affect resistance

A

Length, cross-sectional area, temperature, and material

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10
Q

A conventional current is the flow of ___________

A

positive charge

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11
Q

A __________ is a material with zero resistance

A

superconductor

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12
Q

In a __________ , there is only one path for the current to flow

A

series connection

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13
Q

Who was the narrator of the Cosmos episode titled “Electric Boy”

A

Neil deGrasse Tyson

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14
Q

Who is the “Electric Boy?”

A

Michael Faraday

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15
Q

Current is measured in units called _______

A

amperes

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16
Q

Power

A

watts

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17
Q

Parallel

A

more than one path for current to flow

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18
Q

Resistor

A

device designed to have a specific resistance

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19
Q

Ohm

A

unit of resistance

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20
Q

Joule

A

the unit of energy

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21
Q

What happens to the force between two changes if the magnitude of one charge is doubled?

A

Force doubles

22
Q

Name the five main energy sources for creating electricity

A

coal, natural gas, petroleum, nuclear power, hydropower

23
Q

Name the four alternative energy sources for creating electricity

A

geothermal, solar power, wind power, biomass

24
Q

What is an electroscope designed to remove?

A

air currents

25
Q

static electricity

A

formed by rubbing electrons off, or on, a surface

26
Q

like charges

A

repel

27
Q

ion

A

charged particle

28
Q

attract

A

unlike charges

29
Q

conductor

A

allows electric current to flow

30
Q

farad

A

unit of capacitance

31
Q

electroscope

A

device used for detecting electric charge

32
Q

electric field

A

force surrounding a charged object

33
Q

voltage

A

potential difference

34
Q

capacitor

A

device used to store electric charge

35
Q

insulator

A

prevents flow of electrons

36
Q

Ohm

A

unit of electric resistance

37
Q

Ben Franklin

A

kite experiment

38
Q

Battery

A

chemical device to make electricity

39
Q

electric current

A

flow of electrons

40
Q

dielectric

A

insulating sheet in a capacitor

41
Q

superconductor

A

has no internal resistance

42
Q

joule

A

unit of energy

43
Q

watt

A

unit of power

44
Q

Volta

A

invented the battery

45
Q

What are the 4 fundamental field force from strongest to weakest?

A

strong nuclear, weak nuclear, electromagnetic, gravitational

46
Q

How does length change resistance?

A

Resistance increases as length increases

47
Q

How does cross-sectional area change resistance?

A

Resistance increases as the cross sectional area decreases

48
Q

How does temperature change resistance?

A

Resistance usually increases as temperature increases

49
Q

How does material change resistance?

A

With all other variables constant, resistance varies with the materials used.

50
Q

Compare the flow of water to the flow of current

A

The flow of water through a pipe is similar to the flow of electricity through a wire. The current of electricity would be the same as how much water is flowing (gal/min) and the volts would be the pressure of water.

Physics (7 decks)

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