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Electric Charges And Fields

Question
CBSEENPH12037279

Two charges one +5 μC and another –5 μC are kept 1 mm apart. Calculate the dipole moment.

Solution

Charge on dipole is ± 5μC=±5 ×10-6 C
Distance between the charges = 1mm= 10-3 m

Dipole moment is given by-p = q(2a)
                                        =5×10-6×2×10-3=10-8 Cm