Define displacement current. What role does it play while charging a capacitor by de source? Is the value of displacement current same as that of the conduction current? Explain.

Explanation

### Step-by-Step Solution

1. **Definition of Displacement Current**:
Displacement current is defined as the current that is generated due to a change in electric flux. It is a concept introduced by James Clerk Maxwell to account for the changing electric field in situations where there is no actual flow of charge, such as in the gap between the plates of a capacitor.

2. **Role of Displacement Current While Charging a Capacitor**:
When a capacitor is connected to a voltage source, an electric field is established between its plates, causing charges to accumulate. Initially, there is a flow of conduction current in the circuit as the capacitor charges. However, since the plates of the capacitor are not in contact, there is no conduction current flowing through the dielectric between the plates. Instead, the changing electric field between the plates creates a displacement current, which allows the continuity of current flow in the circuit. This displacement current is essential to maintain the flow of electric field lines and ensures that the total current in the circuit remains continuous.

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