Understanding Resistance in Filament Lamps

What factors does the resistance of a 24 W, 12 V filament lamp depend on?

The resistance of a 24 W, 12 V filament lamp depends on the current flowing through the lamp.

Answer:

The resistance of a 24 W, 12 V filament lamp depends on the current flowing through the lamp.

When it comes to filament lamps, their resistance is determined by the current passing through them. In the case of a 24 W, 12 V filament lamp, the resistance remains constant at 2.5 ohms when the current flowing through it is up to 0.8 A.

This relationship between resistance, current, and voltage is in accordance with Ohm's law (V = IR), where V represents voltage, I the current, and R the resistance. By using this formula, we can calculate the voltage across the lamp for a given current.

So, the resistance of the lamp plays a crucial role in determining the voltage across it, especially when considering different currents passing through the filament lamp.