(B) The dipole moment $p$ is given by $p = q \times (2a)$,where $q = 2 \times 10^{-6} \ C$ and $2a = 3 \times 10^{-2} \ m$.$p = (2 \times 10^{-6}) \ti

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(B) The dipole moment $p$ is given by $p = q \times (2a)$,where $q = 2 \times 10^{-6} \ C$ and $2a = 3 \times 10^{-2} \ m$.$p = (2 \times 10^{-6}) \times (3 \times 10^{-2}) = 6 \times 10^{-8} \ Cm$.The torque $\tau$ on a dipole in an electric field $E$ is given by $\tau = pE \sin \theta$.For maximum torque,$\sin \theta = 1$,so $\tau_{max} = pE$.$\tau_{max} = (6 \times 10^{-8} \ Cm) \times (2 \times 10^{5} \ N/C)$.$\tau_{max} = 12 \times 10^{-3} \ Nm$.

Class 12 Physics Electric Charges and Fields Electric Dipole and Electric Field

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An electric dipole consists of two equal and opposite charges of $2 \ \mu C$ separated by a distance of $3 \ cm$. If it is placed in an external electric field of $2 \times 10^{5} \ N/C$,the maximum torque experienced by it is:

A
$12 \times 10^{-1} \ Nm$
B
$12 \times 10^{-3} \ Nm$
C
$24 \times 10^{-3} \ Nm$
D
$24 \times 10^{-1} \ Nm$

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Electric Charges and Fields

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Electric Dipole and Electric Field

$A$ dipole is placed in an electric field as shown. In which direction will it move?

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In the case of the dimensions of electric field and electric dipole moment,the power of mass is respectively:

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An electric dipole consisting of two opposite charges of $2 \times 10^{-6} \, C$ each,separated by a distance of $3 \, cm$,is placed in an electric field of $2 \times 10^5 \, N/C$. The maximum torque on the dipole will be:

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An electric dipole with dipole moment $4 \times 10^{-9} \text{ Cm}$ is aligned at $60^{\circ}$ with the direction of a uniform electric field of magnitude $5 \times 10^4 \text{ NC}^{-1}$. Calculate the magnitude of the torque acting on the dipole.

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An electric dipole having each charge of magnitude $2 \mu C$ is placed in an electric field of intensity $8 \times 10^{4} \ N/C$. If the maximum torque acting on the dipole is $4 \times 10^{-3} \ N \cdot m$,the length of the dipole is: (in $mm$)

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An electric dipole consists of two equal and opposite charges of $2 \ \mu C$ separated by a distance of $3 \ cm$. If it is placed in an external electric field of $2 \times 10^{5} \ N/C$,the maximum torque experienced by it is:

Similar Questions

$A$ dipole is placed in an electric field as shown. In which direction will it move?

In the case of the dimensions of electric field and electric dipole moment,the power of mass is respectively:

An electric dipole consisting of two opposite charges of $2 \times 10^{-6} \, C$ each,separated by a distance of $3 \, cm$,is placed in an electric field of $2 \times 10^5 \, N/C$. The maximum torque on the dipole will be:

An electric dipole with dipole moment $4 \times 10^{-9} \text{ Cm}$ is aligned at $60^{\circ}$ with the direction of a uniform electric field of magnitude $5 \times 10^4 \text{ NC}^{-1}$. Calculate the magnitude of the torque acting on the dipole.

An electric dipole having each charge of magnitude $2 \mu C$ is placed in an electric field of intensity $8 \times 10^{4} \ N/C$. If the maximum torque acting on the dipole is $4 \times 10^{-3} \ N \cdot m$,the length of the dipole is: (in $mm$)

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