0
Power dissipated = I2 R
I = sqrt( P/R ) = sqrt(5/4,700) = 32.6 mA . (rounded)
Note:
It's only "safe" if the power actually dissipates, i.e. doesn't just hang around the resistor.
32.6 mA is 'safe' if the resistor is heat-sinked, or at least out in the open air. It's not safe
if the resistor is wrapped in a cozy blanket.
What else can I help you with?
What working of resistor?
The main power producers in an electrical system are the battery and alternator. The alternator puts 14 volts of alternating current into the electrical system and resistors. The resistors only allow a fraction of the AC voltage produced to reach the systems' sensitive components
How can you use Ohm's Law to help you find out why a toaster stoped functioning?
You can use ohm's law, which says I=E/R. You should find how many volts that the power supply is, then find out the current flow through the wires. if the current flow is not what it should be, then your resistor is not working properly. Therefore the resitor would be the problem.
How do you calculate the maximum weight of a swing from the working load weight?
If a swing has a working load of 300 pounds and the rotation hook has a working load of 1000 pounds, what is the maximum weight of a person that would be allowed on the swing?
When working on a current transformer the secondary windings must be?
When working on a current transformer the secondary windings must be shorted. <<>> Properly loaded
Why is it important for all capacitors to display on their cases the maximum working voltage?
If the applied voltage exceeds they Max working voltage than capacitor can blow.
What is resistor and its use and working?
resistor is a passive component which opposes the current flowing through a closed ckt. use in opposition of current in ckt .
Why Ac fan does not work on Max?
Your AC fan is not working on the maximum setting because you have a bad blower motor resistor. This is located under the dash or next to the blower motor.
What does a 90R5 resistor do?
A resistor marked as 90R5, will have a resistance of 90.5 Ohms.The letter denotes where the decimal place should be, as a small dot may become invisible with age.Multipliers are also used for higher values. K=1000, M=1,000,000.As for uses: Resistors are used for limiting current, reducing voltage and providing a load.A resistor marked in this way, would probably be a large ceramic type, with a high working current. possibly used in a power supply.Passing a current through the resistor will create a voltage across it, this can be used for a feedback circuit to control the suppply or limit the current.
Why your 1997 marquis not working on low after you change resistor?
Assuming you are asking about the HVAC blower motor, check the condition of the switch and the electrical connection at the switch. And, if the original resistor was burned out the cause is usually because of the blower motor drawing too much current. If so, replace the blower motor or you will burn out another resistor soon.
2001 buick century blower fan stopped working have checked fuses they are okay?
If the low and medium speeds of your fan are not working and only the high speed is working, then it is probably the resistor fan control module. This unit will have to be replaced. It is generally located underneath the dashboard on the passenger side. Locate the blower motor and trace back the two power leads from the blower motor. They will terminate at the resistor module. The resistor module is a series of resistors that controls the amount of current flowing into the fan motor. On low speed settings, the current flows though all the resistors and as you increase the fan speed, resistors are switched out until eventually at the highest setting the complete resistor network is switched out. That is why you end up with only high blower fan speeds when the resistor module becomes defective.
2000 Sunfire blower motor resistor?
heat not working
Are inductors and resistors the same thing?
No. An inductor is not a resistor, and a resistor is not an inductor.A resistor is a device that resists current by causing a known voltage drop to a known current. Ohm's law states that voltage is current times resistance.An inductor, on the other hand, resists a change in current because it is a stored energy device, working on the principle of bucking magnetic fields. The equation of an inductor is ...di/dt = v/L... which means that the rate of change of current is proportional to voltage and inversely proportional to inductance.From an analytic point of view, often we consider devices to be like resistors, and we do that for inductors as well, but that is only for an instantaneous point in time. They are not the same thing.
How do you test heater fan resistor peugeot 406?
its easier to undo the motor and test that if that isn't working then it will more than likely be the resistor
Can a front blower resistor stop heater blower from working?
YesYes
How do you determine the working capital of a business?
Working Capital is calculated as follows Working Capital = Current Assets - Current Liabilities Current Assets = 100000 Current Liabilities = 50000 Working Capital = 50000 (Answer)
Have replaced the climate control panel twice on a 1999 Jeep Wrangler because the fan speed selector quit working What could the problem be?
It is either your blower motor resistor pulling too much current, or the blower motor itself pulling too much current. The resistor is located underneath the dashboard behind a kick shield. The blower motor is in the enigine compartment, just behind the battery.
How do you make a working model of ohm's law?
A battery, a potentiometer (pot) and a multimeter (DMM) with current measuring capability will do the trick. Include a switch if you want to. Your setup is dirt simple. Hook up the battery, pot (which is a variable resistor) and DMM (in ammeter mode) in series. Tweak the pot and watch the current go up and down. Be prepared to make some calculations as a battery and a pot, say a 5k or 10k component, will not allow a lot of current. You'll be working in milliamperes, or milliamps (mA). You don't want an experiment with lots of current because you'll have problems with making your battery last and avoiding a situation where your resistance is so low that the battery cannot maintain its rated voltage because you're drawing too much current out of it.
