Q.

An electric dipole of dipole moment p→=(p1i^+p2j^) is placed in a uniform electric field  E→=(ci^-dj^) such that maximum possible torque is experienced by the dipole. Then p1p2 is equal to

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Detailed Solution

Since the dipole experiences maximum torque, the angle between P→ and E→ must be 90o∴P→.E→=0⇒(p1i^+p2j^).(ci^-dj^)=0⇒p1p2=dc
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An electric dipole of dipole moment p→=(p1i^+p2j^) is placed in a uniform electric field  E→=(ci^-dj^) such that maximum possible torque is experienced by the dipole. Then p1p2 is equal to