Electric Charges And Fields

Question

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An electric dipole, when held at 30° with respect to a uniform electric field of 10⁴ N/C experiences a torque of 9 x 10^–26 Nm. Calculate the dipole moment of the dipole.

Solution

Given,

Electric field, E = $10^{4} {NC}^{- 1}$
Torque ,
$τ = 9 \times 10^{- 26} N m θ = 30 ° When electric dipole is placed at an angle θ with the direction of the electric field, torque acting on the dipole is, τ = p E sinθ ∴ the elctric moment of the dipole, p = \frac{τ}{E sinθ} = \frac{9 \times 10^{- 26}}{10^{4} \times \sin 30 °} = \frac{9 \times 10^{- 26}}{10^{4} \times 0.5} = 1.8 \times 10^{- 19} C m$

Some More Questions From Electric Charges and Fields Chapter

a) An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not?
b) Explain why two field lines never cross each other at any point?

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Electric Charges And Fields

An electric dipole, when held at 30° with respect to a uniform electric field of 10⁴ N/C experiences a torque of 9 x 10^–26 Nm. Calculate the dipole moment of the dipole.

Some More Questions From Electric Charges and Fields Chapter

a) An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not?
b) Explain why two field lines never cross each other at any point?

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For Daily Free Study Material Join wiredfaculty

Electric Charges And Fields

An electric dipole, when held at 30° with respect to a uniform electric field of 104 N/C experiences a torque of 9 x 10–26 Nm. Calculate the dipole moment of the dipole.

Some More Questions From Electric Charges and Fields Chapter

a) An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not?b) Explain why two field lines never cross each other at any point?

Mock Test Series

NCERT Sample Papers

Entrance Exams Preparation

An electric dipole, when held at 30° with respect to a uniform electric field of 10⁴ N/C experiences a torque of 9 x 10^–26 Nm. Calculate the dipole moment of the dipole.

a) An electrostatic field line is a continuous curve. That is, a field line cannot have sudden breaks. Why not?
b) Explain why two field lines never cross each other at any point?