Question

LDR drawing

Answer 1

To create a drawing or diagram of a Light Dependent Resistor (LDR) circuit, you would typically follow these steps:

### Simple LDR Circuit Diagram

1. **Components**:
- **LDR (Light Dependent Resistor)**: This component changes its resistance based on the amount of light that hits it.
- **Resistor**: A fixed resistor is usually included in the circuit to work in conjunction with the LDR.
- **Power Source**: A battery or power supply (e.g., 9V battery).
- **Output**: This could be an LED or a multimeter to measure voltage.

2. **Circuit Layout**:
- Connect the LDR and a resistor in series.
- Connect one end of the LDR to the positive terminal of the power source.
- Connect the other end of the LDR to one end of the fixed resistor.
- Connect the other end of the resistor to the ground (negative terminal of the power source).
- If you want to measure the voltage, you would take a connection from the junction of the LDR and the resistor to your output device (like a voltmeter or microcontroller).

### Example Description of LDR Circuit

```
+ ---------+--------- R ------------ Ground
| | (Fixed Resistor)
| |
LDR |
| |
Light V
Source Output (e.g., LED, Voltmeter)
```

### Explanation of Functionality:

- **Working**: When light hits the LDR, its resistance decreases, causing more current to flow through the circuit. This can trigger an output device (like turning on an LED) or change the voltage across the resistor, which can be measured.
- **Applications**: LDR circuits can be used in automatic street lights, light meters, and other light-sensing applications.

Let me know if you want more details or a specific type of LDR application!