Question

The filament of a bulb is made extremely thin and long in order to achieve?

• A. high current
• B. high resistance
• C. high resistivity
• D. high voltag

Answer 1

Answer:

B. high resistance

The filament's long and thin design creates high resistance, allowing it to heat up and emit light when electricity flows through it. The filament is usually made of tungsten, a material that emits light when electricity is passed through it. The emission of light is due to the high resistance offered by the material tungsten, which we will learn in higher classes.