Which effect of electric current is utilised :
in an electric bulb ?

Options

A. Heating effect
B. Chemical effect
C. Magnetic effect
D. Both B and C

Answer

**Step-by-Step Solution:**

1. **Understanding the Electric Bulb**: An electric bulb consists of a filament that is responsible for producing light when electricity passes through it.

2. **Material of the Filament**: The filament in an electric bulb is typically made of tungsten. Tungsten is chosen because it has a high melting point and can withstand high temperatures.

3. **Resistance of the Filament**: The tungsten filament has a very high resistance. When electric current flows through a material with high resistance, it generates heat.

4. **Heating Effect of Electric Current**: The effect of electric current that is utilized in an electric bulb is known as the heating effect. This is the phenomenon where electrical energy is converted into heat energy.

5. **Glow of the Filament**: As the electric current passes through the high-resistance tungsten filament, it heats up to a point where it begins to glow. This glowing filament emits light.

6. **Conclusion**: The light produced by the glowing filament is what we see when the electric bulb is turned on. Thus, the effect of electric current utilized in an electric bulb is the heating effect of electric current.

**Final Answer**: The heating effect of electric current.

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