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G12 > Electromagnetism > Flashcards

Electromagnetism Flashcards

1
Q

Two types of charges

A

Positive and negative

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2
Q

Is produced when an imbalanced of electrical charges

Electricity at rest

A

Static Electricity

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3
Q

Greek word of electricity

A

Elekton: Amber

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4
Q

Famous for experiments like flying kites during thunderstorms

A

Benjamin Franklin

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5
Q

Classified charges, either positive or negative

A

Benjamin Franklin

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6
Q

Discovered electrons (negative charge)

A

JJ Thomson

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7
Q

Discovered protons (positive charge)

A

Ernest Rutherford

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8
Q

Charges are measured in

A

Coulombs

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9
Q

Occurs when an external charge sphere is placed near the neutral sphere; attraction occurs

A

Charge separation

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10
Q

Has same amount of protons and electrons

A

Neutral sphere

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11
Q

An objects sum of the number of electrons and protons

A

Net charge

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12
Q

Chemical property of an atom to attract electrons itself

A

Electron Affinity

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13
Q

Ranks materials based on their tendency to acquire charge

A

Triboelectric series

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14
Q

This charge particle has the ability to transfer from one object to another

A

Electrons

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15
Q

Electrons are transferred when objects are rubbed against one another

Charging by rubbing

A

Charging by Friction

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16
Q

States if the object is neutral, negatively charged, or positively charged

A

Net charge

17
Q

It allows the flow of charges, especially electrons

A

Conductors

18
Q

It resists the flow of electrons

A

Insulators

19
Q

Atoms are made up of three subatomic particles namely:

A

Protons, electrons, and neutrons

20
Q

Unlike charges

A

Attract

21
Q

Like charges

A

Repel

22
Q

A charged object is touched to a conductor

Charging by contact

A

Charging by conductor

23
Q

Explain charging by conduction

A

When a good sphere conductor is placed near a negatively charged rod, electrons will then move from rod to sphere. After separation, both will obtain negative charges.

24
Q

Happens due to induced charges. No contact between two materials

A

Charging by induction

25
Q

Explain charging by induction

A

The charges in a conducting
object can be rearranged with the presence of an external charged object.

26
Q

Two methods of charging an object

A
  1. Charging by Friction
  2. Charging by induction
27
Q

Can happen when you rub two objects with unequal electronegativity. The object with higher electronegativity will be
negatively charged, and the other object with lower electronegativity will be positively charged.

A

Charging by Friction

28
Q

The algebraic sum of all the electric charges in any closed system is constant

The charge is being conserved; cannot be created nor destroyed

A

Law of Conservation of Charge

29
Q

Changes in charges are brought by the movement of

A

Negatively charged particles

G12 (14 decks)

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