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What is a flaw in a circuit that allows a large current to flow where not wanted called?
The basic requirements are a power source, a closed circuit and some form of resistance on it to work.
amperes or A.
What is a type of circuit where current by passes most resistance and large dangerous currents flow?
A short circuit. In a properly installed system the fuse will blow to prevent a fire.
Amperes or Amps. To find the circuit Amps, you take the circuit volts and divide the number by the resistance value for the circuit. A=V/R
What happens to the steel cylinder on the circuit breaker if a large current flows through the coil?
I take it you mean the iron (rather than steel) core of the solenoid. If the current reaches the limit set, it is attracted against a spring by the resulting magnetic field cr…eated by the coil around it. The movement trips the switch that cuts the current, and usually stays mechanically latched off until re-set by a local or remote control. (Some circuit-breakers, called auto-reclosers, re-set themselves once the overload has passed. These are typically used on grid transmission-lines.)
That's an "open" circuit.
Any complete circuit. ==== An electrical circuit.
yes the current can flow through a short circuit but there is no voltage because of the zero resistance hence current through the circuit will be infinite The above is of cour…se a strictly theorethical truth. In the real world, several things limit current. The power source has a finite capacity, sometimes expressed as internal resistance, sometimes in max current, etc. All the wires, connections, and switches also have resistance. At high levels of current like this, even a small resistance will introduce a significant voltage drop. Use Ohms law, and you'll quickly see that with small amounts of resistance, infinite current isn't a real world situation. Likewise there will always be a certain small voltage, otherwise, there could be no current..
Basically two things You need basically two things: a complete, closed-loop conductive path and an electro-motive force, that is, a voltage. Check out this picture… for a simple circuit containing a battery, two wires, and a light bulb: http://www.bbc.co.uk/schools/ks3bitesize/science/images/sci_dia_52.gif. The wires and bulb complete the conductive path from, and returning to, the battery.
In an AC circuit it flows both directions, in a DC circuit see website below. http://www.madsci.org/posts/archives/2000-02/949953455.Ph.r.html
depends whether AC (alternating current/house current) or DC (direct current/i.e. battery powered) electrons flow thru the wires. in DC circuit they all go the same direct…ion. in AC they alternate...