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Flashlight by light, battery, circuit, a hood and a reflective cup, circuit storehouse, switch, etc, the basic principle is the current from the battery, and then to the circuit, after adjusting circuit voltage and current, and then output to the light source for lighting.
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Why does a circuit work?
It works with a connected wire and all the components inside a circuit.
How does a rechargeable torch work?
Crank flashlights are very handy devices that are particularly useful in a pinch. No need to worry about charging the flashlight or ensuring it has fresh batteries, the crank flashlight is a great last resort and will always light up your campsite when you need it.GeneratorThe crank flashlight contains a small generator much like the ones that are used to provide electricity around the country. The difference is that the flashlight's generator, also called a dynamo, is powered by manual cranking of the arm.InductionThe principal behind the generator is that of induction. When you move a coil of wire through a magnetic field, a voltage is induced into the wire, which then creates electrical current that flows through the circuit. Inside your crank-powered flashlight is a wire coil that is inside a magnetic field. When you crank the arm of the flashlight, you are actually moving this coil in the magnetic field. As the coil moves, voltage is induced and current then flows through the circuitry and lights the bulb of the flashlight.BatteriesYou've probably noticed that you can crank your flashlight for a few minutes and then get a reliable light source for a while afterward without actively cranking. This is because the crank flashlight has rechargeable battery cells inside that store the energy that you've created from cranking. In this way you don't have to actively crank to use the flashlight, but can crank and then have the flashlight operate on batteries.Read more: How Does a Crank Flashlight Work? | eHow.com http://www.ehow.com/how-does_4911443_crank-flashlight-work.html#ixzz1Xz4cG0feELEPHANT!
How did the first flashlight work?
The first flashlight reflect beam from a flowerpot is USA. bulb is in flowerpot and battery is fixed at buttom of flowerpot.
How do you complete the impossible test question when you need to turn off the flashlight?
turn off the flashlight, when you can not work anymore, need to rest.
How does saswitch work?
A simple on/off switch is on and the current allowed to pass when the two contacts inside the switch are bridged, completing an electrical circuit. When off, the bridge is opened and the electricity can't jump across the gap, so no electricity can flow round the circuit.
How does a dynamo flashlight work?
A dynamo flashlight works by producing its own electricity. The flashlight has a crank that is turned by the operator. The crank runs a small generator inside that produces enough electric to run the flashlight.
Would a flashlight work on moon?
yes
Why does a circuit work?
It works with a connected wire and all the components inside a circuit.
Would a flashlight work on the moon?
Yes it would only if we could try it.
Why would a circuit not work when a wire is replaced with cotton string?
why would a circuit not work when a wire is replaced with a cotton string
You put a fresh battery in the flashlight but it still would not work?
A source of electricity
If a circuit had a gap in it would it work?
Nope... if the circuit has a gap in it - the path of electrons is interrupted, and that would stop the circuit from working.
What would happen if you put both batteries in backward in a two cell flashlight?
Nothing would happen, the flashlight simply wouldn't work. Switch the batteries back around and it will work. This is purely because the contacts don't line up properly. A normal incandescent lamp will work either way round. A modern LED flashlight however is polarity sensitive.
Where would you put an ammeter in a circuit?
in a series circuit or it will not work. Put it after the bulb
How does a rechargeable torch work?
Crank flashlights are very handy devices that are particularly useful in a pinch. No need to worry about charging the flashlight or ensuring it has fresh batteries, the crank flashlight is a great last resort and will always light up your campsite when you need it.GeneratorThe crank flashlight contains a small generator much like the ones that are used to provide electricity around the country. The difference is that the flashlight's generator, also called a dynamo, is powered by manual cranking of the arm.InductionThe principal behind the generator is that of induction. When you move a coil of wire through a magnetic field, a voltage is induced into the wire, which then creates electrical current that flows through the circuit. Inside your crank-powered flashlight is a wire coil that is inside a magnetic field. When you crank the arm of the flashlight, you are actually moving this coil in the magnetic field. As the coil moves, voltage is induced and current then flows through the circuitry and lights the bulb of the flashlight.BatteriesYou've probably noticed that you can crank your flashlight for a few minutes and then get a reliable light source for a while afterward without actively cranking. This is because the crank flashlight has rechargeable battery cells inside that store the energy that you've created from cranking. In this way you don't have to actively crank to use the flashlight, but can crank and then have the flashlight operate on batteries.Read more: How Does a Crank Flashlight Work? | eHow.com http://www.ehow.com/how-does_4911443_crank-flashlight-work.html#ixzz1Xz4cG0feELEPHANT!
What position does the switch have to be in for a circuit to work?
The switch would be open.
How does a torch work for kids?
In a torch (flashlight), the current passes from the positive terminal, through the bulb, and returns back in the negative terminals, making a complete circuit. When the switch is moved to the on position, a metal piece inside the case touches the positive terminals of the battery, the circuit is completed, and the torch turns on. Move the switch to the off position, the metal piece no longer touches the positive terminals of the battery, and the torch turns off.
