How many excess electrons must be added to an insulated spherical conductor of 32 cm diameter to produce an electric field of 1150 N/C just outside its surface

Q: Determine the electric field strength at a point 1.00 cm to the left of the middle charge shown in…

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Q: If the intensity of current that flows through the section of a conductor is 45 mA, how much charge…

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Q: Compute the value of magnetic flux density in air at a point 5cm from a long straight wire carrying…

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Q: A spherical shell contains three charged objects. The first and second objects have a charge of-14.0…

A: The total electric flux through the surface of spherical shell is as -953 N.m2/C wich contains three…

Q: Show that the divergence of an electric field and the electric flux density in a free charge zone…

A: equation of the electrical filed  in a spherical coordinates is as belwo E = q4πε0r2

Q: The resistance of a conductor 1 mm2 in cross-section and 20 m long is 0.346 0. Determine the…

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Q: if relative permittivity is 37.9+i4.7, how much light will be transmitted internally through 50 nm…

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Photoelectric

The photoelectric effect occurs when light (or similar incident radiation, including X-rays) falls on material together with a metal plate and causes it to emit electrons. The discovery of the photoelectric effect led to important new theories (and to a Nobel Prize for Albert Einstein). Photoelectric cells, or photocells, are utilized in burglar-alarm light detectors and garage-door openers (each employs a through-beam of light this is broken when something movements throughout it), and also to play soundtracks on film movies (in which a light beam shines through the soundtrack encoded at the film and is "read" with the aid of the photocells).