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CBSE Class 12-science Answered

A charge of 17.7 ×10^-4 c is distributed uniformly over a large sheet of area 200 m^2 .calculate the electric field intensity at a distance 20 cm from it in air
Asked by shiksha.jha2305 | 23 May, 2019, 12:10: PM
answered-by-expert Expert Answer
Charge density
q/A = 17.7×10-4  / 200 = 8.85 ×10-6 C/m2
 
Electiric field due to charged square plate

begin mathsize 12px style equals fraction numerator sigma over denominator 2 epsilon subscript 0 end fraction space equals fraction numerator 8.85 cross times 10 to the power of negative 6 end exponent over denominator 2 cross times 8.85 cross times 10 to the power of negative 12 end exponent end fraction equals space 5 cross times 10 to the power of 5 space V divided by m end style

Answered by Shiwani Sawant | 23 May, 2019, 12:48: PM

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