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My big kitchen clock runs on a single AAA cell. That's 1.5 volts.
My son has a solar-powered watch. The solar cell is a lot less than 1.5 volts.
I used to have a clock in my office that ran on the voltage between two needles stuck into a potato.
I had to get rid of it after a long weekend when the clock was stopped and the office was full of fruit flies.
But the potato was not a tremendous voltage source.
I don't know what's the smallest voltage that a clock has ever run on, but it's obviously a lot less
than one volt.
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∙ 14y ago
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Why 440 volt for motor and 220 volt for lighting?
The higher the voltage, the less amperage is required and is easier to supply power to the device. Motors take much more power than lighting, therefore voltages may be higher for easier transmission.
How measure 3phase power without wattmeter?
Take the current average of the three lines.Ex.Phase A = 10AmpsPhase B = 9 AmpsPhase C = 11 AmpsAverage = 10AmpsTake the voltage average of the three lines to ground,Phase A = 460VPhase B = 450VPhase C = 470VAverage 460VPower = V*I (Voltage times Current)Since we have a AC circuit,Power = V*I*1.732CommentUnfortunately, the above equation for power only works if you use line voltage; your explanation describes phase voltages. And, of course, it doesn't take power factor into account.
How do you convert db to number using log?
Decibels (db) is 3 times the log based 2 of the difference in power. To convert from db to power, divide by 3 and compute the inverse log based 2. For example, +6db is 26/3 or 22 or 4 times the power, and -9db is 2-9/3 or 2-3 or one eighth the power. If you are attempting to compute voltage, remember that db is power difference, so you need to take the square root of the difference, because power is voltage times current, and current is voltage divided by resistance, so power is voltage squared divided by resistance.
Have a voltage difference across the two holes of an electrical outlet and a generator at a power plant provides this voltage difference?
First of all, let's get the terminology correct -there is no such thing as a 'voltage difference'. 'Voltage' is another word for 'potential difference', so 'voltage difference' would mean 'potential difference difference', which doesn't make any sense! So you should be referring to the voltage across the holes of an outlet, not the 'voltage difference' across those holes.The voltage produced by a generator in the power station produces a much greater voltage (up to 30 000 volts) than the voltage that appears across your outlet (120 V in North America or 230 V in Europe). Furthermore the generator's voltage gets increased even higher (hundreds of thousands of volts) before the electricity transmission can take place. Eventually, those high voltages are reduced, using transformers, until it reaches your outlet.
Will a lower ohm speaker produce more power?
It seems like it would the fact is for maximum power the amplifier output impedance matching the speaker impedance is the factor Since Voltage = Amps * Ohms, as the resistance increases, it will require more voltage to maintain the same current, so higher resistance will take more power. However, if the voltage is constant, the current will decrease with more ohms, so, basically, the answer to your question is yes.
How many oranges does it take to power a clock?
57
How do you find out how much time your power point takes?
The simplest way to find out how long your presentation will take is to get a clock or a stopwatch and time it.
How many potato batteries does it take to power an alarm clock?
2
Why you take cutoff freqency at 3dB?
3 dB implies 1/2 the power and since the power is proportional to the square of voltage, the voltage will be 0,707 of the passband voltage. sqrt(0.5) = 0.707
My computer's ghz clock drops constantly?
That's a good thing, the clock is meant to show the speed at which your processor is running, much like the speedometer of a car. If it drops, it means that the tasks your computer is performing do not take much power, and enables it to run at an efficient speed.
How do you tell the voltage of landscape lights?
take the power it needs and the current it pushes, and divide.V=P/IAnswerLook at the nameplate of the voltage converter -it will specify the output voltage to the lamps. Alternatively, look at one of the lamps, it should have its rated voltage printed on it together with its rated power.
What is lts?
LT XLPE is a type of power cable often used in computers. They are known to be able to take high voltage transfers and short circuit much less than other types.
How much dose it take for a human to feel voltage?
3,000 volts
Why is the clock the only instrument in the cluster that does not work in a 2002 4runner?
take the dash out and make sure the clock is plugged in. if it is then check to see if there is power and a ground. most likely you probabily need to replace the clock.
What are examples of one high voltage equipment and one low voltage equipment and describe the procedures you would take to ensure that these equipment can be tested safely.?
1. High voltage equipment = Toaster2. Low voltage equipment = Mobile phoneBefore testing, remove the source of power. Power cord from the socket for a toaster and battery from a phone.
If voltage and current are proportional why do they increase voltage in powerlines in order to decrease current?
Low current will equal low power losses due to the resistance of the cable. I squared R. (I is transmission current and R is resistance/Metre of cable) by increasing the voltage for the same amount of power the current decreases. Power transmission will take that advantage to transfer less current for the same amount of power.
How many DC volts of solar power would it take to suppy a home 3500kWh?
Power = voltage * current. Without current, relating voltage to power is meaningless. One thing I can say is the voltage should be dictated by the amount of losses that is acceptable - the cabling you use to transfer the power to your home will have a specific resistance per unit length, which is unchanging. If you choose to use a low voltage, you will in turn use a fairly high current to transfer the energy you want. The power lost in the cable will be P = R * I^2. This loss can become significant, dictating a higher voltage.
