4. What will be the amount of work done to rotate an electric dipole of moment 2.0 x 10-20 C.

4. What will be the amount of work done to rotate an electric dipole of moment 2.0 x 10-20 C. m through an angle of 180° in an electric field of intensity 1.2 x 104 v. m-l? [4.8 x 10-16]​

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