How does the resistance of a 100w light bulb compare to the resistance of a 60w light bulb?

Understanding the Resistance of Light Bulbs

When it comes to comparing the resistance of a 100-watt light bulb to a 60-watt light bulb, there are a few key factors to consider. Resistance in a light bulb is an important consideration because it impacts the amount of current flowing through the bulb and ultimately determines the amount of power the bulb consumes. Let's explore how the resistance of these two light bulbs differs:

Resistance and Power: The resistance of a light bulb is directly related to its power rating. In general, a higher wattage bulb will have lower resistance compared to a lower wattage bulb. This means that a 100-watt light bulb will typically have less resistance than a 60-watt light bulb.

Ohm's Law: According to Ohm's Law, the resistance of a device is equal to the voltage across it divided by the current flowing through it. In the case of light bulbs, the voltage across the bulb remains constant (based on the power supply), so the power rating of the bulb directly affects the current flowing through it. Higher wattage bulbs draw more current, resulting in lower resistance.

Efficiency and Heat: Lower resistance in a light bulb means that more current can flow through it, resulting in more power being consumed and more light being emitted. However, this also means that more heat is generated in the process. This is why higher wattage bulbs tend to get hotter than lower wattage bulbs.

Overall, when comparing the resistance of a 100-watt light bulb to a 60-watt light bulb, the 100-watt bulb will have less resistance due to its higher power rating. This lower resistance allows more current to flow through the bulb, resulting in greater brightness but also more heat production.