Didactic summary on Electricity and Magnetism, explained in a
simple and clear way to help you understand these
fundamental concepts of Physics
What is Electricity?
Electricity is the movement of electrical charges (usually electrons) through a
conductive material. It is present in almost everything around us, from light in
the home to the operation of electronic devices.
Basic Concepts of Electricity
1. Electric Charge:
o Particles such as protons (positive charge) and electrons (negative charge)
have an electric charge.
> Unit: Coulomb (C).
2. Electric Current:
> This is the orderly flow of electric charges through a conductor (such as a
wire).
> Unit: Ampère (A).
3. Electrical Voltage (Potential Difference):
> It is the “force” that pushes electric charges through a circuit.
> Unit: Volt (V).
4. Electrical Resistance:
> It is the difficulty that a material offers to the passage of electric current.
> Unit: Ohm (Ω).
5. Ohm's Law:
> Relates current, voltage and resistance: V = R - I.
> Where:
simple and clear way to help you understand these
fundamental concepts of Physics
What is Electricity?
Electricity is the movement of electrical charges (usually electrons) through a
conductive material. It is present in almost everything around us, from light in
the home to the operation of electronic devices.
Basic Concepts of Electricity
1. Electric Charge:
o Particles such as protons (positive charge) and electrons (negative charge)
have an electric charge.
> Unit: Coulomb (C).
2. Electric Current:
> This is the orderly flow of electric charges through a conductor (such as a
wire).
> Unit: Ampère (A).
3. Electrical Voltage (Potential Difference):
> It is the “force” that pushes electric charges through a circuit.
> Unit: Volt (V).
4. Electrical Resistance:
> It is the difficulty that a material offers to the passage of electric current.
> Unit: Ohm (Ω).
5. Ohm's Law:
> Relates current, voltage and resistance: V = R - I.
> Where:
