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Any strength of power source can be used to make an electromagnet. A single AA battery, used well, can (at least briefly) power an electromagnet that can hold several pounds of metal in the air. An electromagnet's strength is determined by three factors: * the material in the core (air makes a weak magnet; iron a reasonably strong one) * the amount of current in the wire * the number of turns that the wire makes around the core The strength of an electromagnet is often referred to in "amp-turns": the number of turns times the amount of current it has. A simple battery approximates a voltage source: that AA battery pushes out about 1.5V of electricity. Divide that 1.5V by the resistance of the wire (longer wire higher resistance) and you get the current in the wire. At least, until your voltage source gives up and can't deliver that much current any more--then you need a new battery. :)
What else can I help you with?
How much energy is stored in a computer?
The energy stored in a computer is typically in the form of electrical energy, stored in the battery or power supply unit. The amount of energy stored depends on the capacity of the battery or power supply, which can vary based on the device and its specifications.
Can a 220 volts ac fan run in a 12 volts battery?
No, a 220 volts AC fan cannot run directly from a 12 volts battery. The fan requires a much higher voltage to operate efficiently. You would need a power inverter to convert the 12 volts from the battery to 220 volts AC to power the fan.
How many volts are needed to lift an electromagnet need to lift a car?
The amount of voltage needed to lift a car with an electromagnet depends on several factors. The size of the coil, as well as the amperage will need to be factored in to know how much voltage will be used.
How much battery power will it take to light up three 1.5 volts bulbs in a series circuit?
The battery should be 4.5 v which is three 1.5 v cells in series. The power in watts depends on the size of the bulbs.
How can a electromagnet pick up more metal things?
More than what? - An electromagnet can pick up metal due to its magnetism - assuming it is turned on. If you increase the current, the electromagnet becomes more powerful - but you must be careful not to pass too much current, otherwise the wires might burn through.
Does listening to music on an iPod touch waste battery power?
It uses a little extra battery power, but not much.
How much power does a psp battery use?
lots
Is there any application for windows 7 to monitor the battery usage?
There is a power icon on the taskbar. It shows whether the computer is plugged into the mains or on battery power. If you hover your cursor over the power icon, while it is running on battery power, it will show as a percentage how much battery life is left (along with an estimate of how much time you have left before the battery dies).
How much power would it take for a 20 watts solar panel to charge a 12v battery?
about 500watts/meters of irradiance
What inverter would you need to run 600watt light and could also put a heavy duty battery charger on to charge the battery bk up that runs the inverter in the first place and can it be done free power?
There is no free power. Inverters always waste some power; they are not 100% efficient. You can't take as much power out of a battery as you put in to it.
How much electrical power does your brain use?
Your brain uses as much power as a ten watt battery. -Helen Brosnan
How strong is a electromagnet?
Well, it depends on the core you use, the thickness of the wire, how much the wire is coiled around the core, and especially the power supply.
Does the auto door lock keypad work with a dead battery?
No. It does not require very much power. If the battery is not putting out enough power to turn the starter, but is putting out some power it may still work. If the battery is totally dead it will not work.
How much energy is stored in a computer?
The energy stored in a computer is typically in the form of electrical energy, stored in the battery or power supply unit. The amount of energy stored depends on the capacity of the battery or power supply, which can vary based on the device and its specifications.
How much can the electromagnet crane pick up?
The weight that an electromagnet crane can lift depends on its design and power. Small electromagnet cranes can lift a few hundred pounds, while larger industrial ones can lift tens of tons. It's important to consult the crane's specifications and limitations before attempting to lift objects.
Can you heat your water with a 9v battery?
Sure. But not much water, a 9 volt battery has very little power (energy).
Can you make a voltage multiplier to run a 180 volts dc motor with a 12volts battery?
You can't make a DC voltage multiplier at all. You'd have to use the battery to power some sort of active power supply which, internally, would either oscillate or switch to create changing voltage, then step the voltage up through a transformer, then rectify and filter the higher-voltage AC, and hand you the higher DC at its output. You would use a significant and probably unacceptable percentage of the battery energy just to run the power supply. In other words, the battery would run the motor for an unreasonably short time before you would need to replace or recharge the battery. Look at the power requirement alone! If the 180V motor needs only 1 Amp to run, then the motor is gorging on 180 watts of power. To deliver only that much power at 12 volts, you would need to draw 15 Amperes from the battery, and that doesn't even yet account for power lost in the intermediate power supply.
