A pair of closely spaced parallel conducting plates, charged with equal and oppo

Question

A pair of closely spaced parallel conducting plates, charged with equal and opposite electric charges produces a uniform electric field in the region between the revolutionize the electr between them and charge them so that the direction of A to plate B. Your idea requires that electrons, when released from rest at one of the plates, reach the ronics industry, you set up such a pair of plates with a separation of 0.805 mm the electric field in their interior region is from plate other plate at the speed of 1.95% of the speed of light. (The speed of light is c-3.00 x 108 m/s.) At which plate should the electrons be released? O Either O Cannot be determined What must the strength of the electric field be? Number NIC

Explanation / Answer

electron will move in the opposite direction of field.

hence electron will start from B to A.

Ans(B)

KE = (Y - 1)m0 c^2

Y = 1/ sqrt[1 - (v/c)^2] = 1 / sqrt[ 1 -0.0195^2]

Y = 1.00019

KE = (1.00019 - 1) (9.109 x 10^-31)(3 x 10^8)

= 1.559 x 10^-17 J or 97.44 eV

delteV = 97.44 eV / e = 97.44 V

E = V / d = 97.44 / (0.805 x 10^-3)

= 121 x 10^3 N/C

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