Electric Charges

What has been recorded as the most basic unit of electrical charge? atom nucleus proton electron

electron

A negatively charged object has _____. lost electrons gained electrons lost protons gained protons

gained electrons

Which of the following statements accurately describe charged objects? Objects of the same charge attract. Objects of the opposite charge repel. Negatively charged objects have lost electrons. Negatively charged objects have gained electrons.

Negatively charged objects have gained electrons.

Some fabrics build up more charge than others because: They are better insulators. They are worse insulators. They are better conductors. none of the above

They are better insulators.

How many types of electrical charges exist? 1 2 3 4

2

Which of the following statements is true about conductors and insulators? Select all that apply. Conductors have few free electrons. Conductors have many free electrons. Insulators have few free electrons. Insulators have many free electrons. Conductors are ideal for electrical wiring. Insulators are ideal for electrical wiring.

Conductors have many free electrons. Insulators have few free electrons. Conductors are ideal for electrical wiring.

Electrical charges were named by

Franklin

Charged spheres attract each other when: They are charged by the same object. They are touched after grounding. The air is dry. They are oppositely charged.

They are oppositely charged.

Charged spheres repel each other when: They are charged. They are charged oppositely. They both receive the same type of charge.

They both receive the same type of charge.

A dryer sheet is attracted to your hand as your pull laundry from the dryer. Which of the following statements is true? Select all that apply. The dryer sheet is positively charged and your hand is negatively charged. The dryer sheet is negatively charged and your hand is positively charged. With the given information it is not possible to tell which charge either object has. The dryer sheet and your hand have opposite charges. The dryer sheet and your hand have the same charge.

With the given information it is not possible to tell which charge either object has. The dryer sheet and your hand have opposite charges.

Free electrons may be transferred between bodies by: heat loss contact action at a distance

contact

A material containing few free electrons, which permit very little flow of electrical current is a(n)

insulator

The natural discharge of electrical energy in the atmosphere is

lightning

If an object repels from another negatively charged object, the first object is: negatively charged neutral positively charged both positively and negatively charged

negatively charged

The most massive component of the atom is the _____. proton electron nucleus neutron

nucleus

Gilbert found that a glass wand and rubber wand produce ? charges.

opposite

The nucleus of any atom has which kind of charge? positive negative neutral proton

positive

A positively charged rod is brought near and touched to a neutrally charged metal object. The metal object will become positively charged by _____. releasing electrons to the rod gaining electrons from the rod releasing protons from the rod gaining protons from the rod

releasing electrons to the rod

Negative charge in a conductor is a result of: lack of electrons neutralization by the atom's nucleus. surplus of electrons

surplus of electrons