Do light bulbs cause resistance?

Do light bulbs cause resistance?

The filament in an incandescent bulb does not have a constant resistance. If you take a bulb and increase the voltage across it, the current increases too. An increase in current means the bulb gets hot—hot enough to glow. As the temperature increases, however, the resistance also increases.

What will happen to a light bulb in a series circuit if the current is increased?

Increasing the voltage increases the brightness of the bulb. When a bulb in a series circuit is unscrewed all bulbs in the circuit go out. Increasing the number of bulbs in a series circuit decreases the brightness of the bulbs.

Should I charge my phone with 1 amp or 2?

Because a lower-capacity battery will recharge more quickly, most phones come with a 1-amp charger in the box. But any device that ends with “-ablet” has a higher-capacity battery, so big smartphones, iPads and other tablets will come with a 2-amp charger to speed up the charge.

Can I use 300ma instead of 500ma?

It will work just fine. Make sure the plug fits with correct polarity.

Do milliamps matter?

The milliamp rating of a power supply is a measure of how much it can supply. The milliamp rating of a pedal is how much it uses. All that matters is supply exceeds demand. The 230 vs 220V rating probably means nothing.

Can I use 500mA instead of 1000ma?

If the device requests 500ma and the power supply can handle up to 1000ma, it’s fine. The device will only draw what it needs and no more. If the device demands more ma than the power supply can deliver, it will force the power supply to deliver it anyway thus frying the power supply.

Can I use 1.5 amp instead of 1 amp?

No, a 1A power supply isn’t a replacement for a 1.5A power supply. It might work if the disk actually takes less than 1A and the power supply was sized with some margin.

Can I use a 500mA instead of 400mA?

Originally Answered: Can I use a 12V 500mA power supply for a 12v 400mA requested device? It should be fine since the power supply is capable of providing up to 500ma while the device only needs 400ma. The important thing is that the supply voltage is the same as the device voltage.