Electrical Forces and Charges

What is Coulomb's Law?

• Coulomb's Law describes the electrostatic force between charged objects.

• Coulomb's Law only applies to magnetic forces.

• Coulomb's Law is related to Newton's Law of Universal Gravitation.

• Coulomb's Law states that opposite charges repel and like charges attract.

Differentiate between conductors and insulators in terms of electrical charges.

• Conductors repel electrical charges, while insulators attract them.

• Conductors allow the flow of electrical charges, while insulators do not.

• Insulators allow the flow of electrical charges, while conductors do not.

• Conductors and insulators both prevent the flow of electrical charges.

What is the SI unit of electric charge?

• Coulomb

• Ampere

• Joule

• Ohm

An insulator is a material that:

• Transfers thermal and electrical energy

• Transfers electrical energy and slows thermal energy

• Slows electrical energy and allows thermal energy to pass

• Slows thermal and electrical energy from transferring

What is a conductor?

• Material that does NOT transfer energy.

• Materials that are connected to circuits.

• Materials that transfer energy.

• Materials that are made of energy.

The plastic covering is there to:

• Provide a conductor for electrical energy to flow.
• Provide an insulator so that electrical energy will not pass outside of the wires.
• Provide a conductor so that electrical energy can NOT flow.
• Provide an insulator so that electrical energy can flow.

The metal copper is there to:

• Provide a conductor for energy to flow from one place to another.
• Provide an insulator for energy to flow from one place to another.
• Provide an insulator to slow the flow of energy.
• Provide a conductor so slow the flow of energy.

According to Coulomb's Law, what is the relationship between the distance separating two charges and the strength of the electric force between them?

• The force increases as the distance decreases.

• The force decreases as the distance increases.

• The force is not affected by the distance between the charges.

• The force decreases as the distance decreases.

According to Coulomb's Law, the greater the separation distance between two charges, the greater the magnitude of the electric force. True or False?

• True

• False

What do you call the process of charging a conductor by bringing it near another charged object?

• induction
• polarization
• neutralization
• conduction