Electric Current
Electric current is the flow of electric charge through a conductor. It is measured in Amperes (A) and is the rate at which charge flows past a given point in a circuit.

Definition
- Electric current is the flow of electric charge through a conductor.
- It is caused by the movement of electrons in a circuit.

Types of Electric Current
- Direct Current (DC): Current flows in one direction only, such as in batteries.
- Alternating Current (AC): Current changes direction periodically, such as in household outlets.

Factors Affecting Electric Current
- Voltage: The force that drives the current.
- Resistance: The opposition to the flow of current in a circuit.
- Conductivity: The ability of a material to conduct electricity.

Measuring Electric Current
- Electric current is measured in Amperes using an ammeter.
- The symbol for electric current is I.

Effects of Electric Current
- Heating effect: Current flowing through a resistor produces heat.
- Magnetic effect: Current flowing through a wire creates a magnetic field.
- Chemical effect: Current can cause chemical reactions in electrolytes.

Applications of Electric Current
- Lighting: Electric current powers light bulbs.
- Electronics: Current is used in electronic devices.
- Motors: Current drives the rotation of motors.

Conclusion
Understanding electric current is essential in the study of electricity and its applications in various fields.