05. DIPOLE
Electric Charges and Fields

272187 An electric dipole, consisting of two opposite charges of $2\times {{10}^{-6}}C$ each separated by a distance $3~cm$ is placed in an electric field of $2\times {{10}^{5}}~N/C$. Torque acting on the dipole is

1 $12\times {{10}^{-1}}~N-m$
2 $12\times {{10}^{-2}}~N-m$
3 $12\times {{10}^{-3}}~N-m$
4 $12\times {{10}^{-4}}~N-m$
Electric Charges and Fields

272191 If the dipole of moment $2.57\times {{10}^{-17}}~cm$ is placed into an electric field of magnitude $3.0\times {{10}^{4}}~N/C$ such that the fields lines are aligned at ${{30}^{\circ }}$ with the line joining $P$ to the dipole, what torque acts on the dipole?

1 $7.7\times {{10}^{-13}}Nm$
2 $3.855\times {{10}^{-13}}Nm$
3 $3.855\times {{10}^{-15}}Nm$
4 $7.7\times {{10}^{-15}}Nm$
Electric Charges and Fields

272192 An electric dipole is placed at an angle of ${{30}^{\circ }}$ with an electric field of intensity $2\times {{10}^{5}}N{{C}^{-1}}$, It experiences a torque of $4Nm$. Calculate the charge on the dipole if the dipole length is $2~cm$.

1 $8mC$
2 $4mC$
3 $8\mu C$
4 $2mC$
Electric Charges and Fields

272193 On decreasing the distance between the two charges of a dipole which is perpendicular to electric field and decreasing the angle between the dipole and electric field, the torque on the dipole

1 increases
2 decreases
3 remains same
4 cannot be predicted
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Electric Charges and Fields

272187 An electric dipole, consisting of two opposite charges of $2\times {{10}^{-6}}C$ each separated by a distance $3~cm$ is placed in an electric field of $2\times {{10}^{5}}~N/C$. Torque acting on the dipole is

1 $12\times {{10}^{-1}}~N-m$
2 $12\times {{10}^{-2}}~N-m$
3 $12\times {{10}^{-3}}~N-m$
4 $12\times {{10}^{-4}}~N-m$
Electric Charges and Fields

272191 If the dipole of moment $2.57\times {{10}^{-17}}~cm$ is placed into an electric field of magnitude $3.0\times {{10}^{4}}~N/C$ such that the fields lines are aligned at ${{30}^{\circ }}$ with the line joining $P$ to the dipole, what torque acts on the dipole?

1 $7.7\times {{10}^{-13}}Nm$
2 $3.855\times {{10}^{-13}}Nm$
3 $3.855\times {{10}^{-15}}Nm$
4 $7.7\times {{10}^{-15}}Nm$
Electric Charges and Fields

272192 An electric dipole is placed at an angle of ${{30}^{\circ }}$ with an electric field of intensity $2\times {{10}^{5}}N{{C}^{-1}}$, It experiences a torque of $4Nm$. Calculate the charge on the dipole if the dipole length is $2~cm$.

1 $8mC$
2 $4mC$
3 $8\mu C$
4 $2mC$
Electric Charges and Fields

272193 On decreasing the distance between the two charges of a dipole which is perpendicular to electric field and decreasing the angle between the dipole and electric field, the torque on the dipole

1 increases
2 decreases
3 remains same
4 cannot be predicted
Electric Charges and Fields

272187 An electric dipole, consisting of two opposite charges of $2\times {{10}^{-6}}C$ each separated by a distance $3~cm$ is placed in an electric field of $2\times {{10}^{5}}~N/C$. Torque acting on the dipole is

1 $12\times {{10}^{-1}}~N-m$
2 $12\times {{10}^{-2}}~N-m$
3 $12\times {{10}^{-3}}~N-m$
4 $12\times {{10}^{-4}}~N-m$
Electric Charges and Fields

272191 If the dipole of moment $2.57\times {{10}^{-17}}~cm$ is placed into an electric field of magnitude $3.0\times {{10}^{4}}~N/C$ such that the fields lines are aligned at ${{30}^{\circ }}$ with the line joining $P$ to the dipole, what torque acts on the dipole?

1 $7.7\times {{10}^{-13}}Nm$
2 $3.855\times {{10}^{-13}}Nm$
3 $3.855\times {{10}^{-15}}Nm$
4 $7.7\times {{10}^{-15}}Nm$
Electric Charges and Fields

272192 An electric dipole is placed at an angle of ${{30}^{\circ }}$ with an electric field of intensity $2\times {{10}^{5}}N{{C}^{-1}}$, It experiences a torque of $4Nm$. Calculate the charge on the dipole if the dipole length is $2~cm$.

1 $8mC$
2 $4mC$
3 $8\mu C$
4 $2mC$
Electric Charges and Fields

272193 On decreasing the distance between the two charges of a dipole which is perpendicular to electric field and decreasing the angle between the dipole and electric field, the torque on the dipole

1 increases
2 decreases
3 remains same
4 cannot be predicted
Electric Charges and Fields

272187 An electric dipole, consisting of two opposite charges of $2\times {{10}^{-6}}C$ each separated by a distance $3~cm$ is placed in an electric field of $2\times {{10}^{5}}~N/C$. Torque acting on the dipole is

1 $12\times {{10}^{-1}}~N-m$
2 $12\times {{10}^{-2}}~N-m$
3 $12\times {{10}^{-3}}~N-m$
4 $12\times {{10}^{-4}}~N-m$
Electric Charges and Fields

272191 If the dipole of moment $2.57\times {{10}^{-17}}~cm$ is placed into an electric field of magnitude $3.0\times {{10}^{4}}~N/C$ such that the fields lines are aligned at ${{30}^{\circ }}$ with the line joining $P$ to the dipole, what torque acts on the dipole?

1 $7.7\times {{10}^{-13}}Nm$
2 $3.855\times {{10}^{-13}}Nm$
3 $3.855\times {{10}^{-15}}Nm$
4 $7.7\times {{10}^{-15}}Nm$
Electric Charges and Fields

272192 An electric dipole is placed at an angle of ${{30}^{\circ }}$ with an electric field of intensity $2\times {{10}^{5}}N{{C}^{-1}}$, It experiences a torque of $4Nm$. Calculate the charge on the dipole if the dipole length is $2~cm$.

1 $8mC$
2 $4mC$
3 $8\mu C$
4 $2mC$
Electric Charges and Fields

272193 On decreasing the distance between the two charges of a dipole which is perpendicular to electric field and decreasing the angle between the dipole and electric field, the torque on the dipole

1 increases
2 decreases
3 remains same
4 cannot be predicted