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An electrle dipole with dipole moment 4 xx 10^(-9)Cm is aligned at 30^@ with the direction of a uniform clectric field of magnitude 5 xx 10^(4)NC^(-1) Calculate the magnitude of the torque acting on the dipole. |
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Answer» Solution :`p=4 xx 10^(-9)Cm, theta=30^(@), ""E=5 xx 10^(4) NC^(-1)` `tau=p E SIN theta=4 xx 10^(-9) xx 5 xx 10^(4) xx sin 30^(@)=4 xx 10^(-9) xx 5 xx 10^(4) xx 1/2=10 xx 10^(-5)NM=10^(-4)Nm` |
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