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A capacitor is to be constructed so that its capacitance is 0.2µF and to take a p.d. of 1.25kV across its terminals.
The dielectric is to be mica which, after allowing a safety factor of 2, has a dielectric strength of 50MV/m. Find
(a) the thickness of the mica needed, and
(b) the area of a plate assuming a two-plate construction.
Draw a schematic diagram of a single optical fibre structure. Describe briefly how an optical fibre is fabricated. Explain in brief, the mechanism of propagation of light signal by
Do glass or polymer transmits the radiation? There is not a simple answer since it will always depend on the last use and working conditions of the system. Usually speaking gla
Two point changes q1 and q2 are placed at a distance r from one another then electrostatic potential energy of two phase charge system will be kq 1 q 2 /r . We take P.E. of two ch
A diode in a circuit similar to the one in Figure 29-26 has a voltage drop, V d , of 0.95 V when I = 18 mA. If a 390 Ω resistor, R, is connected in series, what power supply volta
if a body contain n1 electron and n2 proton what is the total charge on the body?
how to calculate speed of light? The speed of light in vacuum, normally denoted by symbol c, is a universal physical constant which is very important in various areas of physi
There is strong evidence that some short-duration gamma-ray bursts occur in systems with no star formation and where no massive stars are present, such as elliptical galaxies and g
Ultraviolet catastrophe: A shortcoming of the Rayleigh-Jeans formula, that tries to explain the radiancy of a blackbody at several frequencies of the electromagnetic spectrum.
A solid cylinder of radius 12.1cm and mass 20.2kg starts from rest and rolls without slipping a distance of 6.14m down the house roof that is inclined at 25.3° relative to the hori
Do objects of different weights fall with same acceleration on the earth? Yes , objects fall with the similar acceleration regardless of their weights at the surface of earth,
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