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Conventional current is defined as the flow of charge from positive to negative. The terms "positive" and "negative" were first applied to charge by Benjamin Franklin; he chose to call the charge left on a rubbed glass rod as "positive". The conventional terminology was well established by the development of batteries and the need to distinguish their terminals.
It was more than a century later that the electron was identified as the subatomic particle which carried electric charge. Unfortunately, it turned out to be negative.
What else can I help you with?
What does an electron produce?
An electron produces an electron cloud when it is moved about a nucleus of an atom.
Can moving electrons through a magnetic field can produce an electric current?
Yes, a moving electron in a magnetic field can induce an electric current. This is the principle behind electromagnetic induction, where a changing magnetic field induces an electric current in a conductor.
Difference between velocity and current modulation in klystron?
Velocity modulation in a klystron involves the interaction between the electron beam's velocity and the RF field to produce amplification. Current modulation, on the other hand, involves varying the electron beam's current to control the amplification of the RF signal. In summary, velocity modulation affects the electron beam's speed, while current modulation affects the electron beam's density in a klystron.
What are the differences between a free-electron laser and a conventional laser?
Free-electron lasers were invented at Stanford University by John Madey. While these lasers share the same optical properties as conventional lasers, the main difference between the two is the principal they use to form the beam.
What is the difference between electron microscopes?
Electron microscopes and what ... Light microscopes produce magnified images by focusing visible light rays. Electron microscopes produce magnified images by focusing beams of electrons
What does electric current?
transmitission of current produce an electric field.and it produce power
Why is it impossible to use a transformer on a direct current where the current is steady at all times?
alternating current has two halfs in one cycle.In one half it flows in one direction and in other half it flows in opposite direction.due to fluctuations ,alternating current has ability to produce phenomenon of mutual induction. and mutual induction is the basic principle on which a transformer works while direct current cannot produce phenomenon of mutual induction.thats why a transformer is not used on a direct current
What is the function of the lens in an electron microscope?
The lens in an electron microscope focuses and magnifies the electron beam to produce high-resolution images of tiny objects.
How do electric generators produce a current?
they produce a current the magnetic field has to turn motion into that current. the gas coal or water pass on that current to the magnetic field.
How much current does a typical flame center produce?
A typical flame center does not produce electrical current in the conventional sense, as flames are not electrical devices. However, flames can generate a small amount of electric charge due to the movement of ions and charged particles during combustion, which can lead to a phenomenon known as flame ionization. The actual current produced can vary widely depending on the flame's size, type, and conditions, but it is generally minute and not measured in standard current units like amperes.
What does an electron microscope use to produce images?
a beam of electrons
Why are cfls efficient than conventional electric bulb?
Conventional incandescent bulbs are extremely inefficient because they use a piece of wire heated to white heat to produce the light. That means that they also produce a lot of heat, which is wasted energy. CFL bulbs produce light more directly and they produce about one fifth of the amount of heat energy.
