Electricity Flashcards

1
Q

Explain electric insulators

A

Something that electricity cannot flow throuvh

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Explain electric conductors

A

Something electricity easily flows through

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

How do objects become neg- charged

A

Gain electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

How do objects become pos+ charged

A

Loose electrons

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What is the law of electric charge

A

Alike charged repel opposite attract

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

How are objects charged by friction

A

Rubbing together makes one object loose and the other gain e-

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How are objects charged by contact

A

One charged object touches neutral object and transfers e-

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

How are objects charged by induction

A

Charged object repelling/attracting e- without touching

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What is E and it’s units

A

Energy, joules (J)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What is Q and it’s units

A

Charge, coulombs (c)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is V and it’s units

A

Potential differance, Volts, V

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is I and units

A

Current, Amperes, A

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is t and units

A

time, seconds, s

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is R and units

A

Resistance, ohms, omega symbol

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

What is P and units

A

Power, watts, w

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

How is voltmeters contacted in a circuit

17
Q

How are ammeters connected in circuits

18
Q

Does current stay the same in series?

19
Q

Does current stay the same in parrallel?

20
Q

What happens if a bulb burns out in series?

A

Everything stops

21
Q

What happens if bulb burns out in parrallel

A

Current decrease, bulbs stay on

22
Q

What gives more resistance?

A

Longer wire, smaller diameter, less conductive, hot tempature

23
Q

What is current?

A

Flow of electrons

24
Q

What is potential differance?

A

Differance in electric potential energy per unit of charge measured at different any points in the circuit

25
What is efficiency
Measure of energy input to output
26
What is always wasted energy?
Heat
27
Name different kinds of ways to make electricity
Fossil fuels, nuclear fission, hydroelectric, solar, wind, biomass, geothermal.
28
What is best conductor?
Copper
29
How do we get electricity?
Fuel->steam->turbine->generator->transformer->distribution
30