Listrik Statis

The part of an atom that carries a negative charge is...

• proton

• electron

• positron

• Neutron

Inti atom terdiri atas

• proton dan elektron

• proton dan pasitron

• proton dan neutron

• elektron dan neutron

Positive atom occurs when

• number of protons = number of electrons

• number of electrons > number of protons

• number of electrons < number of neutrons

• number of protons > number of electrons

When plastic is rubbed with wool, it becomes negatively charged because....

• positive charge enters the plastic

• protons move from plastic to wool

• electrons move from wool to plastic

• friction generates electrons

When glass is rubbed with silk, it becomes positively charged. This is because...

• electrons move from glass to silk

• Electrons move from silk to glass

• Protons move from silk to glass

• Protons move from glass to silk

An atom is said to be neutral when the number of....

• Protons and nucleons are the same

• Protons and neutrons are the same

• Protons and electrons are the same

• Protons and positrons are the same

Benda X is positively charged and object Y is negatively charged. If both objects are close to each other, then

• object X and Y will attract each other

• object X will repel object Y

• object X and Y will repel each other

• object X and Y will not interact

An object that has an excess of electrons will be charged ....

• negative

• positive

• neutral

• positron

Muatan yang beredar mengelilingi inti atom disebut ....

• elektron

• proton

• neutron

• pasitron

Perhatikan gambar lima buah bola bermuatan listrik berikut!

Bola B dan E bermuatan listrik negatif (–). Ketika bola A didekatkan E terjadi tolak-menolak, A didekatkan dengan D tarik-menarik dan C didekatkan dengan E tarik-menarik.

Maka dapat disimpulkan bahwa muatan bola….

• A = negatif (–), C dan D = positif (+)

• A dan C = negatif (–), D = positif (+)

• A = positif (+), C dan D = negatif (–)

• A dan D = negatif (–), C = positif (+)