Electricity and Magnetism Review

Front

What is electricity?

Back

Electricity is the flow of electric charge, typically through a conductor, and is used to power devices and appliances.

Front

What is a circuit?

Back

A circuit is a closed loop that allows electric current to flow, consisting of a power source, conductors, and a load.

Front

What is the difference between series and parallel circuits?

Back

In a series circuit, components are connected end-to-end, so the same current flows through all components. In a parallel circuit, components are connected across common points, allowing multiple paths for current.

Front

What is voltage?

Back

Voltage is the electric potential difference between two points in a circuit, measured in volts (V). It determines how much energy is available to move charges.

Front

What is current?

Back

Current is the rate of flow of electric charge in a circuit, measured in amperes (A). It indicates how many charges pass a point in a circuit per second.

Front

What is resistance?

Back

Resistance is the opposition to the flow of electric current, measured in ohms (Ω). It determines how much current will flow for a given voltage.

Front

What is a magnetic field?

Back

A magnetic field is a region around a magnet where magnetic forces can be detected, influencing other magnets and magnetic materials.

Front

What happens when like charges come close to each other?

Back

Like charges repel each other, meaning two objects with the same charge (both positive or both negative) will push away from one another.

Front

What happens when opposite charges come close to each other?

Back

Opposite charges attract each other, meaning a positive charge will pull a negative charge closer.

Front

What is an electromagnet?

Back

An electromagnet is a type of magnet created by electric current flowing through a coil of wire, often wrapped around a ferromagnetic core.