1 Answer
### What is a Resistor?
A **resistor** is a simple electrical component that limits or resists the flow of electric current in a circuit. It’s kind of like a bottleneck in a pipe—it doesn’t stop the water (or current) completely, but it makes it harder for it to flow.
Resistors are measured in **ohms** (Ω), and the amount of resistance depends on the material, size, and shape of the resistor.
* **High resistance** means less current can flow.
* **Low resistance** means more current can flow.
Resistors are used to control current, divide voltages, and protect sensitive components from too much current.
### What is Voltage?
**Voltage** is the **electrical potential difference** between two points in a circuit. It’s the "push" that pushes electrical charges (electrons) through a conductor, like a wire.
Imagine it like water pressure in a pipe—voltage is what drives the water (current) through the pipe.
Voltage is measured in **volts (V)**, and it tells us how much energy each electron has to move through the circuit. A higher voltage means more energy is available to move the electrons.
### Relationship Between Voltage, Current, and Resistance
The relationship between these three is described by **Ohm’s Law**:
$$
V = I \times R
$$
Where:
* $V$ is the **voltage** (in volts)
* $I$ is the **current** (in amperes)
* $R$ is the **resistance** (in ohms)
So, if you increase the resistance (using a higher value resistor), the current will decrease, unless you increase the voltage to "push" more current.
Does that help clarify things? Let me know if you want a more detailed explanation or examples!
A **resistor** is a simple electrical component that limits or resists the flow of electric current in a circuit. It’s kind of like a bottleneck in a pipe—it doesn’t stop the water (or current) completely, but it makes it harder for it to flow.
Resistors are measured in **ohms** (Ω), and the amount of resistance depends on the material, size, and shape of the resistor.
* **High resistance** means less current can flow.
* **Low resistance** means more current can flow.
Resistors are used to control current, divide voltages, and protect sensitive components from too much current.
### What is Voltage?
**Voltage** is the **electrical potential difference** between two points in a circuit. It’s the "push" that pushes electrical charges (electrons) through a conductor, like a wire.
Imagine it like water pressure in a pipe—voltage is what drives the water (current) through the pipe.
Voltage is measured in **volts (V)**, and it tells us how much energy each electron has to move through the circuit. A higher voltage means more energy is available to move the electrons.
### Relationship Between Voltage, Current, and Resistance
The relationship between these three is described by **Ohm’s Law**:
$$
V = I \times R
$$
Where:
* $V$ is the **voltage** (in volts)
* $I$ is the **current** (in amperes)
* $R$ is the **resistance** (in ohms)
So, if you increase the resistance (using a higher value resistor), the current will decrease, unless you increase the voltage to "push" more current.
Does that help clarify things? Let me know if you want a more detailed explanation or examples!