1 Answer
Electric current is the flow of electric charge in a circuit. It is caused by the movement of electrons through a conductor, such as a wire. The amount of electric current is measured in **amperes (A)**.
### Key Points:
1. **Flow of Electrons** β In metals, electric current is the movement of free electrons from one atom to another.
2. **Direction of Current** β
- **Conventional Current** flows from the positive (+) terminal to the negative (β) terminal.
- **Electron Flow** is in the opposite direction, from negative (β) to positive (+).
3. **Types of Current** β
- **Direct Current (DC)** β Flows in one direction (e.g., battery).
- **Alternating Current (AC)** β Changes direction periodically (e.g., household electricity).
4. **Formula** β The current \( I \) is calculated using **Ohm's Law**:
\[
I = \frac{V}{R}
\]
where:
- \( I \) = Current (in amperes, A)
- \( V \) = Voltage (in volts, V)
- \( R \) = Resistance (in ohms, Ξ©)
Would you like a real-life example or a deeper explanation? οΏ½οΏ½
### Key Points:
1. **Flow of Electrons** β In metals, electric current is the movement of free electrons from one atom to another.
2. **Direction of Current** β
- **Conventional Current** flows from the positive (+) terminal to the negative (β) terminal.
- **Electron Flow** is in the opposite direction, from negative (β) to positive (+).
3. **Types of Current** β
- **Direct Current (DC)** β Flows in one direction (e.g., battery).
- **Alternating Current (AC)** β Changes direction periodically (e.g., household electricity).
4. **Formula** β The current \( I \) is calculated using **Ohm's Law**:
\[
I = \frac{V}{R}
\]
where:
- \( I \) = Current (in amperes, A)
- \( V \) = Voltage (in volts, V)
- \( R \) = Resistance (in ohms, Ξ©)
Would you like a real-life example or a deeper explanation? οΏ½οΏ½