1.10 An electric dipole with dipole moment 4 <math><mo>×</mo><mrow><mrow><mn>10</mn></mrow></mrow><mo>-9</mo></math>C m is aligned at 30° with the direction of a uniform electric field of magnitude 5 <math><mo>×</mo><msup><mrow><mrow><mn>10</mn></mrow></mrow><mrow><mrow><mo>4</mo></mrow></mrow></msup></math> N<math><msup><mrow><mrow><mi>C</mi></mrow></mrow><mrow><mrow><mo>-</mo><mn>1</mn></mrow></mrow></msup></math> . Calculate the magnitude of the torque acting on the dipole.

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Physics Ncert Solutions Class 12th Physics Class 12th Electric Charges and Fields

1.10 An electric dipole with dipole moment 4 $\times 10 -9$ C m is aligned at 30° with the direction of a uniform electric field of magnitude 5 $\times 10^{4}$ N $C^{- 1}$ . Calculate the magnitude of the torque acting on the dipole.

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alok kumar singh | Contributor-Level 10

5 months ago

Ans.1.10 Electric dipole moment, p = 4 $10 -9$
C m

Angle made by p with a uniform electric field, $?$ = 30 $°$

Electric field, E = 5 $* 10^{4}$ N $C^{- 1}$

Torque acting on the dipole is given by $?$ = pE $\sin ? ?$ = 4 $* 10^{- 9} *$ 5 $* 10^{4} * \sin ? 30 °$

= 1 $* 10^{- 4}$ Nm

Therefore, the magnitude of the torque acting on the dipole is $10^{- 4}$ Nm

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1.10 An electric dipole with dipole moment 4 $\times 10 -9$ C m is aligned at 30° with the direction of a uniform electric field of magnitude 5 $\times 10^{4}$ N $C^{- 1}$ . Calculate the magnitude of the torque acting on the dipole.

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1.10 An electric dipole with dipole moment 4 ×10-9C m is aligned at 30° with the direction of a uniform electric field of magnitude 5 ×104 NC-1 . Calculate the magnitude of the torque acting on the dipole.

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1.10 An electric dipole with dipole moment 4 $\times 10 -9$ C m is aligned at 30° with the direction of a uniform electric field of magnitude 5 $\times 10^{4}$ N $C^{- 1}$ . Calculate the magnitude of the torque acting on the dipole.