The force experienced by an unit charge when placed at a distance of 0.10m from the middle of an electric dipole on its axial line is 0.025N and when it is placed at a dustance of 0.2m the force is reduced to 0.002N. Calculate the dipole length

Question

Khimraj · Answer

Let length of dipole is 2a then elecrtric field on axial line is given by E = 2kpr/(r 2 – a 2 ) 2 Then E1/E2 = (r1/r2)*((r2 2 – a 2 ) 2 /(r1 2 – a 2 ) 2 ) 0.05 – 5a 2 = 0.04 – a 2 0.01 = 4a 2 a = 1/20 m = 5 cm then length = 2a = 10 cm. Hope it clears If you like answer then please approve it.

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The force experienced by an unit charge when placed at a distance of 0.10m from the middle of an electric dipole on its axial line is 0.025N and when it is placed at a dustance of 0.2m the force is reduced to 0.002N. Calculate the dipole length

The force experienced by an unit charge when placed at a distance of 0.10m from the middle of an electric dipole on its axial line is 0.025N and when it is placed at a dustance of 0.2m the force is reduced to 0.002N. Calculate the dipole length

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