Unit 6: Electrical Forces Review

Which of the following best describes induction?

• The direct transfer of electrons from one object to another through contact.

• The generation of an electric current by changing the magnetic field.

• Charging an object without direct contact by bringing a charged object near it.

• The movement of electrons through a conductor due to a potential difference.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is the primary difference between conductors and insulators?

• Conductors have a high resistance to the flow of electric current, while insulators have low resistance.

• Conductors allow electric charges to flow freely, while insulators do not allow electric charges to move easily.

• Conductors can only be metals, while insulators can only be non-metals.

• Conductors are used to store electric charge, while insulators are used to generate electric charge.

How do you charge an object through friction?

• By holding a charged object close to another object

• By rubbing two neutral objects together

• By touching one object to another

• Friction doesn't charge objects

Tags

NGSS.MS-PS2-3

What is the role of a resistor in an electrical circuit?

• To increase the current flowing through the circuit.

• To store electrical energy for later use.

• To limit the amount of current flowing through the circuit.

• To convert electrical energy into mechanical energy.

Which of the following statements is true about electrical fields?

• Electrical fields are only present around moving charges.

• Electrical field lines point in the direction of the force experienced by a positive test charge.

• Electrical field lines point in the direction of the force experienced by a negative test charge.

• Electrical fields are only present in conductors.

Tags

NGSS.HS-PS3-5

What happens during an electrical discharge?

• Electrons are stored in an insulator.

• Electrons move quickly from one charged object to a grounded object.

• Electrons are created and destroyed.

• Electrons are converted into protons.

Which of the following best describes the transfer of charge by conduction?

• Charging an object by bringing it close to another charged object without touching.

• Charging an object by allowing it to come into contact with another charged object.

• Charging an object by removing electrons from it.

• Charging an object by adding protons to it.

What is the effect of increasing the resistance in a circuit while keeping the voltage constant?

• The current increases.

• The current decreases.

• The current remains the same.

• The power increases.

Which of the following materials is most likely to be a good conductor of electricity?

• Rubber

• Glass

• Copper

• Wood

What is the primary function of an insulator in an electrical circuit?

• To increase the flow of electric current.

• To prevent the flow of electric current.

• To convert electrical energy into thermal energy.

• To store electrical energy.