When a conductor is connected to a source of current, the number of electrons entering at one end of the conductor is equal to the number of electrons leaving the conductor from the other end, per second

Explanation

**Step-by-Step Solution:**

1. **Understanding the Statement**: The statement claims that when a conductor is connected to a source of current, the number of electrons entering at one end of the conductor is equal to the number of electrons leaving from the other end per second.

2. **Current Flow in a Conductor**: When a conductor is connected to a battery or any source of current, an electric current (I) flows through the conductor. This current is defined as the flow of charge per unit time.

3. **Direction of Electron Flow**: It's important to note that electrons, which carry a negative charge, flow in the opposite direction to conventional current. If the current flows from left to right, the electrons will flow from right to left.

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