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How much power is produced by 500mA of current through 4.7kΩ resistor?
Wiki User
∙ 11y ago
1,175 watts. Which isn't very feasible
As it infers a voltage of 2350 Volts across the resistor.
Pls recheck you numbers and resubmit
Wiki User
∙ 11y ago
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How long will a 6.0 Amp hour battery provide 500MA of current for?
6Ah will provide 500 milliamphours for 12 hours.
What is the output dc voltage for a nokia mobile charger?
7.5v 500mA Dc charger
Can you replace a transformer with an input rating of 120VAC 60Hz 12W and output rating of 12vdc 500mA with one that has an input rating of 120vac 60hz 25w and an output rating of 12VDC 1A?
Yes, you can. Here's why. If a supply's output is rated at 12 volts DC (12 VDC) and 500 milliamperes (500mA), it can deliver a maximum of 500mA at the 12 volt rating. You want to use a 12VDC supply that is rated at 1A (1000mA). That means that the supply is capable of delivering up to 1A at 12VDC. Now the crux of the matter. Your device, that's the load on the supply, needs 12VDC to operate. Your replacement supply is rated at 12VDC. No problem. Your supply delivered a max of 500mA. That does NOT mean that your load, that thing you're powering up, actually uses all 500mA. Your load knows how much current it needs to draw. Your supply has to be rated for more than that. Your supply was rated at 500mA. It worked well. The supply you wish to use will deliver a max of 1A (1000mA). It will easily supply the current your load will use. Oh, and the polarity of the new supply must be the same as that of the old one. That's pretty obvious. Always be safe and consult an electronics specialist for electrical questions. There are a number of savvy folks working at consumer electrical outlets who can get you up to speed.
Is there any danger to powering a 12V 200mA case fan via USB at 5V 500mA max?
If wired correctly, this will not damage the fan or the USB port, as the fan will take less current at a lower voltage. The main problem with this arrangement is the fan would either not start, or would run very slowly, so probably useless for cooling anything. If you can get a 5V fan, not more than 500mA, this would be much more effective. (Note- If wired incorrectly, reverse polarity could damage both USB port and fan, short circuit could damage your USB port.)
What is an mah battery?
it is the Acronym for Milliamp hours No, not an acronym. It's just an abbreviation, which should be written mAh. A small battery's capacity is given in mAh, and is the approximate product of current and time. e.g. 500mAh means it can deliver approximately 500mA for 1 hour, or 50 mA for 10 hours etc, pro rata. Larger batteries have their capacity stated in Ah.
What is the power when there are 500mA of current through a 4.7k Ω resistor?
p=i square x r = 500ma * 500ma = .25 * 4.7k = 1175 watts
What will be the potential difference across a 50Ω resistor if a current of 500mA is flowing through it?
Potential difference equals current multiplied by resistance or E = IR therefore the answer to your question is 25 volts
There is a total of 500mA of current into five parallel resisters the currents through four of the resistors are 50mA 150mA25mA and 25mAand 100mA what is the current through the fifth resister?
150 mA is.
What does 500mA equal to?
500mA = 500 miliamper 1000mA = 1 amp so 500mA = .5 amps
How many mA does USB 1.1 provide?
USB 1.1 port (5V power) current is limited to 500mA.
How long will a 6.0 Amp hour battery provide 500MA of current for?
6Ah will provide 500 milliamphours for 12 hours.
What will happen if use a 12v 400ma instead of 12v 500ma?
i am not sure, BUT according to the answer in this post:Can_you_use_a_9V_600mA_adapter_on_a_9V_400ma_scanneryou need an adaptor of 9v and AT LEAST 500mA (assuming that the appliance draws 500mA)
Can you charge a 500mA battery with a 1300mA charger?
Yes, you can charge a 500mA battery with a 1300mA charger.
Can you use a 9v dc 200mA ac adaptor in place of a 500mA?
Yes. The current rating should be the same or greater than the original. This means the adapter can supply up to 500mA; In your case it only needs to supply 200mA, so it is more than up to the job.
Can a 12V 2A adapter be used for a 12V 500mA device?
The adapter's voltage must match that of the device, and its current-rating must exceed that of the device. So the answer is yes.
Is it ok to use an adaptor with 4.5V 100mA output which works for an Omron BP measurement machine which needs 6.0 V 500mA output?
No. Both the voltage and the current are too low.
Can you use 12v 600ma instead of 12v 500ma?
Using a 12v 600ma source is allowing 12 volts and 600 amps of power. If the device requires a 12v 500ma source, the larger source is acceptable. Please note that it will only be drawing on 500ma of the available 600ma.
