The current conduction in a discharged tube is due to

Options

A. Electrons only
B. `+Ve` ions and `-Ve` ions
C. `-Ve` ions and electrons
D. `+Ve` ions, and electrons

Answer

To solve the question regarding the current conduction in a discharge tube, we will analyze the components involved in the process.

### Step-by-Step Solution:

1. **Understanding the Discharge Tube**:
A discharge tube is an electrical device that consists of a sealed glass container filled with gas. It has two electrodes at either end.

**Hint**: Recall that a discharge tube is used to study the behavior of gases under electric fields.

2. **Applying Potential Difference**:
When a potential difference is applied across the electrodes, an electric field is created within the tube. This field causes the gas particles to become ionized.

**Hint**: Think about how electric fields influence charged particles in a gas.

3. **Ionization of Gas**:
The application of the electric field causes the gas atoms to lose electrons, resulting in the formation of positive ions and free electrons.

**Hint**: Remember that ionization involves the loss of electrons from neutral atoms.

4. **Movement of Charged Particles**:
The free electrons, being negatively charged, will move towards the positive electrode (anode), while the positive ions will move towards the negative electrode (cathode).

**Hint**: Consider the direction of movement of charges in an electric field.

5. **Current Conduction**:
The total current in the discharge tube is the sum of the currents due to the movement of positive ions and the movement of electrons. Therefore, both types of charged particles contribute to the conduction of current.

**Hint**: Recall that current is defined as the flow of charge, and both types of ions contribute to this flow.

6. **Conclusion**:
Based on the analysis, we conclude that the current conduction in a discharge tube is due to both positive ions and electrons.

**Final Answer**: The correct option is "positive ions and electrons".