1 Answer
A **resistor** is an electronic component that resists the flow of electrical current in a circuit. It is used to control the amount of current flowing through different parts of the circuit. Resistors are essential for protecting sensitive components from excessive current and for setting the proper voltage in various applications.
The unit of **resistance** is the **ohm**, symbolized by the Greek letter **Ω** (Omega). The resistance value tells you how much the resistor will resist the current.
1 ohm (Ω) is the amount of resistance that allows 1 ampere (A) of current to flow when a voltage of 1 volt (V) is applied across it. The relationship between voltage (V), current (I), and resistance (R) is given by **Ohm's Law**:
\[ V = I \times R \]
Where:
- **V** is voltage in volts (V),
- **I** is current in amperes (A),
- **R** is resistance in ohms (Ω).
In simple terms, a resistor controls how much current flows in a circuit based on its resistance.
The unit of **resistance** is the **ohm**, symbolized by the Greek letter **Ω** (Omega). The resistance value tells you how much the resistor will resist the current.
1 ohm (Ω) is the amount of resistance that allows 1 ampere (A) of current to flow when a voltage of 1 volt (V) is applied across it. The relationship between voltage (V), current (I), and resistance (R) is given by **Ohm's Law**:
\[ V = I \times R \]
Where:
- **V** is voltage in volts (V),
- **I** is current in amperes (A),
- **R** is resistance in ohms (Ω).
In simple terms, a resistor controls how much current flows in a circuit based on its resistance.