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Ohm's law revisited; Current (amperage) = voltage divided by resistance. E=I/R

http://www.glenbrook.k12.il.us/gbssci/Phys/Class/circuits/u9l3c.html

http://www.bcae1.com/ohmslaw.htm

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Related Questions

Can using larger wire sizes reduce amp draw?

Using larger wire sizes will not reduce amp draw. The amp draw is determined by the electrical device or load connected to the circuit, not the wire size. Larger wire sizes are used to reduce voltage drop and heat generation in the wiring, but they do not directly affect the amp draw of the circuit.


How do you determine the equipment ground wire size for equipment?

It is an electrical code rule that is determined by the amount of current that a connected device draws. Depending on the amperage that the equipment will draw determines what the size of the wire needed to handle the fault current. The larger the amperage the larger the ground wire needed.


Does an electrical receptacle draw power?

No the receptacle itself does not consume any power it is just a source of power. No amperage is used until the load is plugged in and turned on. Appliances plugged in with the switch in the off position draw no current. Devices that do not have an off- on switch will start drawing power as soon as they are plugged in. Once an appliance is switched on you are billed for the use of the electricity.


Does amperage and a voltage mean the same thing?

No. Amperage is the current flowing down the conductor as voltage is a constant (relatively). As an example- a 120 volt light bulb is of course 120 volts but if it is 60 watts then it will draw .5 amps. a 100 watt bulb will draw around .8 ampsDifferent things.


What makes a marine battery's terminals hot?

Amperage draw, excessive amperage draw, and or dirty & loose connections. This should be checked out if the temperature is elevated when not cranking your engine.


How much amperage a hair dryer draw?

A typical hair dryer draws around 10-15 amps when operating at its highest setting. It is important to check the specific amperage rating of the hair dryer you are using to ensure it is compatible with the electrical circuit you are using.


How much amperage does a dishwasher draw?

Each electrical equipment draws a different amperage. Most residential dishwashers draw about six amps. There has to be a specification sticker on the inside of the door of the dishwasher ,which must such information stated on it. Commercial dishwashers could draw sixty amps and be using three phase power!!


How do you check amperage draw on electrical devices 12v DC automotive?

connect an ampmeter in series between the power source and the device ex. remove the power + wire and fit the ampmeter between the + wire and the device alternitively you can get clamp on ampmeters they are dearer but you can test amps with out removing any wires they just clamp on over the wire and give you an amp reading


How many watts does a compact fluorescent bulb draw?

Look for an amperage on the ballast. Multiply this amperage by the connected line voltage. This will give you the wattage of the unit.


Can you run a motor of greater amperage draw with a motor of less amperage draw?

It looks like you are asking if a higher amperage motor can replace a lower amperage motor. It depends on what the amperage difference is. If the amperage is high enough to move the capacity of the wire out of its rated value then it should not be done.Remember motor conductors have to be rated at 125% of the motors nameplate amperage. As the amperage increases so does the HP and the motor's protection will also have to be increased or the motor will trip the lower overload protection settings.Also keep in mind that if the motor is three phase, running a motor with higher HP on a load that does not need the extra HP, it will lower the power factor of the supply distribution.


What is loading rate?

The maximum amperage draw or load that the device or wire can safely carry.


What is circuit amperage?

Generally speaking an appliance (eg tv) is supplied with power so when it is off it has voltage supplied. After yo turn it on it starts to draw power called amperage the voltage doesn't get higheur but the amperage does Amperage is the load being drawn through a circiut