SNC 1W1 Electricity Test Review

These flashcards cover key concepts and definitions related to static and current electricity as outlined in the lecture notes.

What is electricity?

Electricity is a form of energy resulting from the flow of electric charge.

Define static electricity.

Static electricity is the build-up of electric charge on the surface of objects.

List 2 examples of static electricity.

1) Rubbing a balloon on hair 2) Walking on a carpet and getting shocked.

Which subatomic particle is responsible for creating static charges on an object?

Electron.

If the number of electrons is equal to the number of protons, what is the overall charge on the object?

Neutral.

What is the charge on an object that has less electrons than protons?

Positive.

What is the charge on an object that has more electrons than protons?

Negative.

State the Law of Electric Charges.

Like charges repel and unlike charges attract.

What happens to a positively charged object when near a neutral object?

The charged object attracts the neutral object.

What is the function of an electroscope?

An electroscope is used to detect electric charge.

Name the 2 types of electroscopes.

1) Gold leaf electroscope 2) Pivot electroscope.

What happens to the leaves of an electroscope when it is charged?

The leaves diverge from each other.

What are the 3 methods of charging a neutral object?

1) Friction 2) Conduction 3) Induction.

What happens to substances closer to the top of the Electrostatic Series when rubbed?

They lose electrons and have a positive charge.

What charge do substances closer to the bottom of the Electrostatic Series gain when rubbed together?

They gain electrons and have a negative charge.

Define grounding in electricity.

Grounding is the process of transferring an electric charge from an object to the ground.

How does a lightning rod protect a home during a thunderstorm?

It provides a path for the electrical charge from lightning to reach the ground safely.

What are the 4 main components of an electric circuit?

1) Power source 2) Conductors 3) Load 4) Switch.

What is the difference between an open circuit and a closed circuit?

An open circuit has a break preventing current flow; a closed circuit has no breaks and allows current flow.

How many paths does a series circuit have?

One path.

How does adding more light bulbs affect the brightness in a series circuit?

The light is dimmer.

What happens if one light bulb stops working in a series circuit?

The rest will stop working.

In a parallel circuit, how many paths are there?

More than one path.

How does adding more light bulbs affect the brightness in a parallel circuit?

The light remains the same.

If one light bulb stops working in a parallel circuit, what happens to the rest?

The rest will stay on.

Complete the voltage-resistance-current triangle formula.

V = I x R.

What happens if the wire is thinner?

Thinner wire results in more resistance.

What is an example of a renewable energy source?

Solar energy.

What is an example of a non-renewable energy source?

Fossil fuels.