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Anelectric dipole with dipole moment 4xx 10^(-9)C-mis aligned at30^(@)with the direction of auniform electric field of magnitude5xx 10^(4) NC^(-1) .Calculate the magnitude of the torque acting on the dipole. |
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Answer» Solution :Here `p=4 xx10 ^(-9) C-m ,theta =30^(@)and E=5xx 10^(4) NC^(-1) ` ` therefore ` Magnitude of torque ` tau =pE SIN theta =4xx 10^(-9)XX 5xx 10^(4)xx sin 30^(@) = 4xx 10^(-9) xx 5xx 10^(4)xx 0.5 =10^(-4)N-m ` |
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