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Deduce an expression for the electric field E due to a dipole of length '2a' at a point distant 'r' from the centre of the dipole on the axial line. (b) Draw a graph of E versus r forr gt gt a. © |
Answer» Solution :E-r GRAPH for ` r gt gt a `shown in figure The positions of stable and UNSTABLE equilibrium have represented in in Both positions , TORQUE acting on the dipole is ZERO.
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