Sage-Tips

Which has a larger resistance A 60 W 120V lightbulb or a 100 W 120V lightbulb?

Take the voltage to be 230V for both the bulbs. Therefore, 60 watt lightbulb has larger resistance than a 100 watt lightbulb.

What is the resistance of a 40 W 120V light bulb?

So a 40W bulb at 120V would be 360 ohms, and you measure 26 ohms when cold.

Does a 100 W bulb have greater or less resistance than a 40.0 W bulb?

By the equation for power , the bulb with the lower resistance will dissipate more power. The 100 W bulb has a smaller resistance, so it will be the brighter bulb.

What is the resistance of a 100 watt 120 volt bulb?

For example, a 100 watt light bulb operating on 120 volts AC will have 144 ohms of resistance and will draw 0.833 Amps.

In which 120v light bulb does the filament have greater resistance?

The resistance of a light bulb filament is effected by both length and cross-sectional area. Thicker wires have less resistance. A 120-Watt bulb has a greater current and a smaller resistance. Thus, a 120-Watt bulb must have a thicker filament than a 60-Watt bulb (assuming the lengths of the filaments are identical).

Which bulb has more resistance 100W or 60W?

A 60-watt bulb has a higher electrical resistance than a 100-watt bulb. Because power is inversely proportional to resistance, when the power is less, the resistance is high.

Does a 100 W bulb have greater or less resistance than a 45 W bulb?

So, the 100 watt bulb draws more current than 40 watt one. Resistance is inveresely proportional to current. Thus a 40watt bulb will have more resistance. To get more power resistance should be low.

What resistance does a light bulb have?

The typical cold resistance of a 100 W incandescent lamp is about 9.5 ohms. If that resistance stayed the same with 120 V applied, Ohm’s Law tells us that the bulb would draw about 12.5 amps and dissipate about 1,500 watts.

What is the resistance of a circuit with 120 V and 5 a?

If your toaster is drawing a current of 5 amp, at a voltage of 120 volts, and to find out the resistance of the toaster you can apply the formula R =V /I so it will be 120 ÷5 =24 Ohms, is the resistance of the heater of the toaster, at the power factor taken into consideration as 1.

Which has more resistance 100w or 60w?

What is the resistance of a light bulb that runs 120 V?

For example, a 100 watt light bulb operating on 120 volts AC will have 144 ohms of resistance and will draw 0.833 Amps. Beside this, what is the hot resistance of a 25 W light bulb that runs on 120 V AC?

What is the difference between a 60 watt and 100 watt bulb?

The resistance of a 60 W bulb is greater than the resistance than a 100 W bulb. The filament in the 60 W bulb is thicker and it will be brighter than the 100 W bulb. Increasing the power increases the resistances.

How many amps does a light bulb draw on 120 volts?

Ohms Law Calculator. Enter any two known values and press “Calculate” to solve for the others. For example, a 100 watt light bulb operating on 120 volts AC will have 144 ohms of resistance and will draw 0.833 Amps. Beside this, what is the hot resistance of a 25 W light bulb that runs on 120 V AC?

What is the Ohm of a 40 watt light bulb?

The 40 W bulb: 120^2/40 = 360 Ohms. As stated in your question, since both bulbs operate at 120v and both have different wattages, the one with higher wattage should have low resistance. So, the 100 watt bulb draws more current than 40 watt one.