How will you show that electrons qare negatively charged particle ?

Explanation

To demonstrate that electrons are negatively charged particles, we can follow these steps based on the cathode rays experiment:

### Step-by-Step Solution:

1. **Setup of the Cathode Rays Experiment**:
- Begin with a vacuum tube that contains two electrodes: a cathode (negative electrode) and an anode (positive electrode). When a high voltage is applied, electrons are emitted from the cathode and travel towards the anode, forming what are known as cathode rays.

2. **Observation of Cathode Rays**:
- When the cathode rays are produced, they travel in straight lines from the cathode to the anode. This can be observed by placing a fluorescent screen or a photographic plate at the end of the tube, which lights up or gets exposed where the rays strike.

3. **Application of Electric Field**:
- Introduce an electric field by placing charged plates (positive and negative) near the path of the cathode rays. The positive plate is placed on one side and the negative plate on the other side of the tube.

4. **Deflection of Cathode Rays**:
- Observe the behavior of the cathode rays in the presence of the electric field. The rays will bend towards the positive plate. This deflection indicates that the rays are being attracted to the positive charge.

5. **Conclusion from Deflection**:
- Since opposite charges attract, the fact that the cathode rays (which we suspect are made of negatively charged particles) are attracted to the positive plate suggests that they must indeed be negatively charged.

6. **Identification of Electrons**:
- The particles in the cathode rays were later identified as electrons, which are confirmed to be negatively charged particles. This conclusion is supported by further experiments and the understanding of atomic structure.

### Final Statement:
Thus, through the cathode rays experiment, we can conclude that electrons are negatively charged particles because they are attracted to the positive plate in the presence of an electric field.

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