0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
Why do you get an electric shock by touching a bare wire?
electric shock is a physiological symptom caused by an electric current flowing though the body. the current causes heating and, at higher levels, burns, and eventually death. The bare wire has an electric potential of some substantial voltage above ground. This potential causes a current to flow through your body to ground. if some other part of your body is not connected to ground, no current will flow. The current causes burning in your blood stream, your nervous system, and in you tissue. the current that flows through your body needs to be above about 10mA for you to perceive it as a shock. The voltage required to produce this current, by ohms law, depends upon the resistance between the point of contact and ground.
A flow of electric charge in wire?
direct current
How the charge on a wire changes when an electric current flows in the wire?
2 plus 2
Can electric fields be harmful?
Before lightening strikes, there has to be an electric field. If you grab a live wire, the voltage of the wire creates an electric field in you which drives the current that kills you.
How can earth wire prevent electric shocking?
large current flows from live to earth wire.
How do you show that electric current causes magnetism?
Put a wire carrying an electric current near a compass and it causes the needle to deflect.
What is produced whenever there is a flow of electrons in a wire?
Electric current is the movement of electrons through a conductor.
Why any electric wire get suddenly cool when electric current cutoff?
Heat in an electric wire is mainly caused by the rapid movement and collision of electrons as they flow along it, when an electric current is cut off, the flow is greatly reduced causing a huge drop in temperature.
What an electric current does a wire produces?
Heat within the wire due to the movement of electrons. A magnetic field around the wire due to the movement of charged particles.AnswerThere are three 'effects' of an electric current. These are:heating effectchemical effectmagnetic effectSince 1948, the magnetic effect has been used to define the unit of current, the ampere -i.e. the ampere is defined in terms of the force between two, parallel, current-carrying conductors.
What makes the pickup guitar make sound?
A guitar pickup is wire coiled around a magnet. When the string vibrates, it causes the magnet to vibrate, which creates an electric current in the wire. The signal created by that electric current is then fed into the amplifier which converts it to sound.
How can sound be changed into electric current?
The most common way is with a magnet and a coil of wire. Have either the magnet or the coil (it doesn't matter which) fixed in place and the other one attached to a membrane that will vibrate with the sound. When a magnet moves past a coil of wire, it causes an electric current in the wire.
Electric current in a metal conductor is carried by?
Electric current in a metal conductor is carried by a wire. This wire has been specifically adapted to carry this current.
What causes electrons to move through a wire as a current?
A voltage, which is related to a change in an electric field.
Why electric current across a wire drops?
Electric current does not drop. Electric voltage, however, drops across a wire because the wire has non-zero resistance. (Do not confuse electric current with electric voltage - they are not the same.)The reason current does not drop is that, in a series circuit, according to Kirchoff's current law, the current at every point in a series circuit is the same.
How electric current causes magnetic field around conductor?
Electric current causes magnetic field around conductor by producing a moving electric charges and the intrinsic magnetic moments of an elementary particles that is associated with a fundamental quantum property.
What is a wire that moves electric current with no resistance?
Its called a superconducting wire.
What can current be defined as?
Current is the generic term to describe the flow of something. This could be electrons in a wire (electric current) - or the movement of water in a river (a water current). It can also be used to denote "now" as in "the current time is 12.00" or "current affairs"
