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CBSE Class 12-science Answered

Two charges +10 μC and -10 μC are held 2 cm apart. Calculate the electric field at a point on the equatorial line at a distance of 50 cm from the centre of the dipole.
Asked by rraj.15266 | 16 Dec, 2017, 08:18: PM
answered-by-expert Expert Answer
begin mathsize 12px style r space equals space square root of 1 squared plus 50 squared end root space equals space 50.01 space c m  F subscript 1 space equals space fraction numerator 10 space cross times space 10 to the power of negative 6 end exponent over denominator 4 pi epsilon subscript 0 cross times 2501 space cross times space 10 to the power of negative 4 end exponent end fraction cos theta space space comma space space space F subscript 2 space equals space fraction numerator negative 10 space cross times space 10 to the power of negative 6 end exponent over denominator 4 pi epsilon subscript 0 cross times 2501 space x 10 to the power of negative 4 end exponent end fraction cos theta comma space space space space F subscript 3 space equals space fraction numerator 2 cross times 10 space cross times space 10 to the power of negative 6 end exponent over denominator 4 pi epsilon subscript 0 cross times 2501 cross times 10 to the power of negative 4 end exponent end fraction cos theta end style
 
F1 and F2 cancel each other, F3 = 72 × 104 N / C
Answered by | 19 Dec, 2017, 03:56: PM
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