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What are the reasons for excessive current flowing through a circuit?
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Why is the fuse always on the 'live' side of the appliance?
If there was a fault to earth the casing of the appliance would remain live otherwise. Also there could be a large current from live to earth which could heat the wires to the extent that your house burns down. This is expensive! Neutral is near earth potential anyway. <<>> The fuse should be the first device in any circuit. When a fault occurs the potential across the circuit should become zero to ground. If the fuse was located on the downstream side of the load it would still open the circuit but every part of the circuit upstream from the load would still have a voltage potential to ground. Any one working on the circuit upstream from the load has the potential to receive a shock even though the fuse has opened the circuit. So to answer the question the placement of the fuse in a circuit is for safety reasons.
Do not allow the electrons to flow?
Things that would stop electrons flowing in a circuit would be insulators, breaks in the circuit such as open switches, or items that have the same effect. Electrons also generally will not flow if the source of the electrical potential is inhibited or removed... i.e., they don't feel any electromotive force such as the Coulomb force (or Lorenz force, depending on the situation); although superconductors seem an interesting exception the flow can still be attributed to a previous source of electrical potential and lack of resistance. Free electrons in a vacuum may still "flow" for similar reasons, until acted upon by a force such as encountering matter.
Why can flashlights be nonluminous?
there are three reasons that cause the flashlight non 1. battery is out of power 2. the tmeperature of bulb is too height to cause short circuit 3. soaking
Why do lemons kept in a glass of water appear to be enlarged?
give reasons: 1) lemons kept in a glass of water appear enlarge. 2)dispersion cannot take place through a glass slab. 3)fuse wires or miniature circuit beakers are not used in a circuit containing electriccells why? 4)a stationary charge cannot produce electric field.
Is their a flow of electrons in conventional current?
Before, when science wasn't as advanced, scientists believed that an electric current flowed from the positive end to the negative end of a circuit. However, more advanced technology has allowed scientists to investigate this more thoroughly, and results state that electric current flows from the negative terminal to the positive terminal, thus called the electron flow. For reasons unknown, scientists have maintained the original idea of the current running from the positive terminal to the negative one, and have named it conventional flow.AnswerBefore the structure of the atom was understood, scientists such as Benjamin Franklin believed that an electric current was a flow of some sort of mysterious 'fluid' that moved from an area of high pressure to an area of low pressure. The high pressure was considered to be 'positive' pressure and the low pressure was considered to be 'negative pressure'.Even though we now know that (in metallic conductors, anyway) that current is a flow of free electrons from negative to positive, for some weird reason many textbooks still show current as flowing from positive to negative! To differentiate between the two current directions, we use the terms 'electron flow', and 'conventional (or 'Franklinian') flow'.
What are the two reasons for the current to double in a circuit?
Since current = voltage / resistance, I = V/R, the current in a circuit will double if either the voltage doubles, or the resistance is halved.
When electrical circuit is open?
An open electrical circuit means that no electricity is flowing through the circuit. This could be because a switch is in the off position, or there is a break in the wiring, or a component in the circuit has failed, and other reasons are possible.
Is a ground wire necessary for a complete circuit?
No, the ground wire is there for safety reasons and only carries current in fault conditions.
Will a ceiling fan work if it's not grounded?
Yes, the grounding of equipment is for safety reasons not operational reasons. By grounding equipment, the conductor, if the equipment develops a short circuit to ground, supplies a low impedance return to the distribution panel where is is sensed by the circuits breaker. Once the breaker senses this short circuit current it will trip the circuit open.
What are the reasons for connecting resistance in the rotor circuit when starting wound rotor induction motors?
To limit the starting current in slip ring induction motors.
What is caused by a short circuit?
A short circuit is a low resistance connection where one is unexpected. It causes a diversion of current from the intended load, and, since it is usually a higher than expected current, it often causes the protective device (fuse, circuit breaker, or relay control logic) to trip.
Reasons for the current reccesion?
waht are the reasons for the current recession
How are circuit breakers connected with the other elements in a circuit?
Both of these devices are safety devices used to open a faulted circuit and stop the current flow.
Can people die in an electric circuit?
Yes, quite easily. A current of **** (value blanked for safety reasons) is enough to cause the heart to fail, if a person is unlucky enough to have this happen to them.
Why do you have circuits breakers in your home?
Circuit breakers are designed to interrupt the flow of electric current if the current exceeds a certain preset value. There are two main reasons for this:If an unusually large amount of current is flowing in a circuit, there's a possibility that something has gone wrong - for example, a short may have developed. This is in itself a dangerous situation.Even if nothing is actually wrong and it's simply a matter of too many things (all of which are operating as intended) being connected to the same circuit, the wiring for household circuits is designed for a certain amount of current. If more than that amount flows through the wires, they could begin to heat up, which makes them more resistive so they heat up even more. This can even continue to the point where they catch nearby flammable objects on fire.When a circuit breaker detects an overcurrent situation, it trips, shutting the entire circuit down until it is reset. This allows the people in the house to check to make sure nothing is wrong, and either repair any damage or unplug some of the devices to lower the current demand.
Where do you put a switch in a series circuit?
From the standpoint of basic functionality, you can put the switch anywhere. In a series circuit, there is only one path for current flow. If you open the switch, you interrupt that pathway and turn the circuit "off."There may be practical reasons to put the switch in one place or another, however. Sometimes it's put in a particular place in the circuit for manufacturing reasons. In other circuits, safety may dictate that you put the switch in a particular place: in a ground-referenced circuit for example, you may want to put the switch so that one side is at the ground point.
What is a cause of excessive sweating?
There are many reasons for excessive sweating and to know for sure you should check with a doctor. Some of the reasons could be: illness, fever, anxiety and stress, or overexercising. Check with your health care provider if you are suffering!
