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An electric dipole consists of two oppos...

An electric dipole consists of two opposite charges each of magnitude 1 mC separated by 2 cm. The dipole is placed in an external uniform field of `10^5 NC^-1` intensity. Find the
a. maximum torque exterted by the field on the dipole, and
b. work done in roating the dipole through `180^(@)` starting from the position `theta = 0^(@)`.

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