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Physic Electricity Chpt2-3 > Chapter2-3 > Flashcards

Chapter2-3 Flashcards

1
Q

Current

A

The flow of electrons

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1
Q

Current

A

The flow of electron

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2
Q

Conductor

A

The ability to absorb/contain electricity

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3
Q

Voltage

A

The driving force that pushes the current

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4
Q

Ac

A

The current move forward and backwards

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5
Q

Dc

A

The current flow in one direction

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6
Q

Electron

A

Negative charged particles

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7
Q

Voltmeter

A

It measure voltage

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8
Q

Ammeter

A

It measure current

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9
Q

Ohmic

A

The resistance is constant

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10
Q

Non ohmic

A

The resistance isn’t constant

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11
Q

Energy equation

A

E=F/q

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12
Q

What is matter

A

Matter is made up of huge numbers of positive and negative charges

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13
Q

Can charged particle move through insulator

A

No

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14
Q

Can charge be created or destroyed

A

No

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15
Q

How does charges move from one place to another

A

It is because of electrostatic charge

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16
Q

Like charge does what

A

Repel

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17
Q

Unlike charge does what

A

Attract

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18
Q

Conventional current

A

It flow from positive to negative

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19
Q

Current equation

A

I=q/t

20
Q

Power equation

A

P=VI

21
Q

Voltage equation

A

V=IR

22
Q

What is current units

A

Amps

23
Q

What is voltage unit

A

Volts

24
Q

What is power unit

A

Watts

25
Q

What is resistance unit

A

Ohms

26
Q

What is energy unit

A

Joules

27
Q

Parallel circuits

A

Voltage is constant

28
Q

Series circuit

A

Current is constant

29
Q

Coulomb law

A

F=kq1q2/(r)2

30
Q

k in coulomb law

A

9x(10)9

31
Q

Charge

A

+ or - 1.602 x (10)-19

32
Q

Electric current is the rate of the transfer of charge

A

I=q/t

33
Q

Switch

A

Like a door that open and close to let substance through

34
Q

Cell

A

DC supply

35
Q

Battery of cells

A

DC supply but lots

36
Q

Load

A

Resistor

37
Q

Earth or ground

A

Upside down T with a wifi wave

38
Q

Internal resistance of cells

A

Resistance in the DC supply

39
Q

House

A

240 AC supply

40
Q

The third line on a power is

A

Neutral/ earth and usually green

41
Q

Fuse

A

To melt the wire to cut off the current

42
Q

Three pin plug

A

Brown for active, yellow/green for earth and blue for neutral

43
Q

In series resistance does what

A

Add up

44
Q

In series voltage does what

A

Add up

45
Q

In parallel current does what

A

Add up

46
Q

In parallel resistance does what

A

Add up 1/R=1/R1 + 1/R2 …

47
Q

What is a diode

A

A valve that only allows current to flow only in one direction

Physic Electricity Chpt2-3 (1 decks)

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