An electric lamp glows due to :

Options

A. Chemical effect
B. Magnetic effect
C. Heating effect
D. None of these

Answer

**Step-by-Step Solution:**

1. **Understanding the Components of an Electric Lamp:**
- An electric lamp consists of a filament, which is the part that glows when electricity passes through it.

2. **Current Flow in the Circuit:**
- When the lamp is connected to a power source, electric current flows through the circuit, including the filament.

3. **Effect of Electric Current:**
- As the electric current flows through the filament, it encounters resistance. This resistance causes collisions between the flowing electrons and the atoms of the filament material.

4. **Generation of Heat:**
- These collisions generate heat due to the conversion of electrical energy into thermal energy. This is known as the heating effect of electric current.

5. **Production of Light:**
- The heat generated in the filament raises its temperature to a point where it starts to emit light. This is why we observe the lamp glowing.

6. **Conclusion:**
- Therefore, the electric lamp glows primarily due to the heating effect of electric current.

**Final Answer:**
An electric lamp glows due to the heating effect of electric current.

---