1.

Two opposite and equal charges \[4\times {{10}^{-8}}coulomb\] when placed \[2\times {{10}^{-2}}cm\] away, form a dipole. If this dipole is placed in an external electric field \[4\times {{10}^{8}}newton/coulomb\], the value of maximum torque and the work done in rotating it through \[180{}^\circ \] will be                                   [MP PET 1996]

A.                    \[64\times {{10}^{-4}}Nm\] and \[64\times {{10}^{-4}}J\]
B.                    \[32\times {{10}^{-4}}\]Nm and \[32\times {{10}^{-4}}J\]
C.                    \[64\times {{10}^{-4}}Nm\] and \[32\times {{10}^{-4}}J\]
D.                    \[32\times {{10}^{-4}}Nm\] and \[64\times {{10}^{-4}}J\]
Answer» E.


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