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prisoha [69]
3 years ago
7

An ideal parallel-plate capacitor consists of a set of two parallel plates of area a separated by a very small distance

Physics
1 answer:
vovangra [49]3 years ago
8 0
A capacitor is composed of two oppositely charged parallel plates that produce a magnetic field. That is why when it is placed in a circuit with an induced voltage, it can produce and store electricity. The equation relating this energy (E), the voltage (V) and the distance (d) between the plates of the capacitor is:

V = Ed

So if the voltage or potential difference is constant, then Ed=k. That means that any product of values of E and d would always be the same such that

E₁d₁ = E₂d₂

When d₂ is twice d₁, then d₂ = 2d₁:

E₁d₁ = E₂(2d₁)
E₂ = E₁/2

That means that the energy stored in the capacitor would decrease by a half.
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The electric field must be zero inside a conductor in electrostatic equilibrium, but not inside an insulator. It turns out that
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Answer:

The permittivity of rubber is  \epsilon  = 8.703 *10^{-11}

Explanation:

From the question we are told that

     The  magnitude of the point charge is  q_1 =  70 \ nC  =  70 *10^{-9} \  C

      The diameter of the rubber shell is  d = 32 \ cm  =  0.32 \ m

       The Electric field inside the rubber shell is  E =  2500 \ N/ C

The radius of the rubber is  mathematically evaluated as

              r =  \frac{d}{2} =  \frac{0.32}{2}  =  0.16 \ m

Generally the electric field for a point  is in an insulator(rubber) is mathematically represented as

         E =  \frac{Q}{ \epsilon }  *  \frac{1}{4 *  \pi r^2}

Where \epsilon is the permittivity of rubber

    =>     E  *  \epsilon  *  4 * \pi *  r^2 =  Q

   =>      \epsilon  =  \frac{Q}{E *  4 *  \pi *  r^2}

substituting values

            \epsilon  =  \frac{70 *10^{-9}}{2500 *  4 *  3.142 *  (0.16)^2}

            \epsilon  = 8.703 *10^{-11}

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Answer:

Explanation:

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Why water in earthern pot remain cool in summer
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Answer:

Since in summer, the eastern side do not face the sunlight and hence the water in eastern pot remain cool in summer.

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A stone is thrown upward with an initial upward velocity of 15 m/s from a
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Answer

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Coherent light with wavelength = 600 nm falls on two very narrow closely spaced slits and the interference pattern is observed o
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Answer:

The distance between the two slits is 1.2mm.    

Explanation:

The physicist Thomas Young establishes, through its double slit experiment, a relationship between the interference (constructive or destructive) of a wave, the separation between the slits, the distance between the two slits to the screen and the wavelength.

\Lambda x = L\frac{\lambda}{d}  (1)

Where \Lambda x is the distance between two adjacent maxima, L is the distance of the screen from the slits, \lambda is the wavelength and d is the separation between the slits.  

If light pass through two slits a diffraction pattern in a screen will be gotten, at which each bright region corresponds to a crest, a dark region to a trough, as consequence of constructive interference and destructive interference in different points of its propagation to the screen.  

Therefore, d can be isolated from equation 1.

d = L\frac{\lambda}{\Lambda x}  (2)

Notice that it is necessary to express L and \lambda in units of millimeters.

L = 4m \cdot \frac{1000mm}{1m} ⇒ 4000mm

\lambda = 600nm \cdot \frac{1mm}{1x10^{6}nm} ⇒ 0.0006mm

d = (4000mm)\frac{0.0006mm}{2mm}

d = 1.2mm

Hence, the distance between the two slits is 1.2mm.

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3 years ago
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