05. DIPOLE
Electric Charges and Fields

267990 A small electric dipole is placed at origin with its dipole moment directed along positive\(x\) axis. The direction of electric field at point \((2,2 \sqrt{2}, 0)\) is

1 alongz - axis
2 along\(y\) - axis
3 alongnegativey-axis
4 alongnegativez-axis
Electric Charges and Fields

267991 Two electric dipoles each ofdipolemoment \(p=6.2 \times 10^{-30} \mathrm{C}-\mathrm{m}\) are placed with their axis along the same line and their centres at a distanced \(=10^{-8} \mathrm{~cm}\). The force of attraction between dipoles is

1 \(2.1 \times 10^{-16} \mathrm{~N}\)
2 \(2.1 \times 10^{-12} \mathrm{~N}\)
3 \(2.1 \times 10^{-10} \mathrm{~N}\)
4 \(2.1 \times 10^{-8} \mathrm{~N}\)
Electric Charges and Fields

267992 Two charges\(+3.2 \times 10^{-19} \mathrm{C}\) and \(-3.2 \times 10^{-19} \mathrm{C}\) placed \(2.4 A^{0}\) apart form an electric dipole. It is placed in a uniform electric field of intensity \(4 \times 10^{5} \mathrm{~V} / \mathrm{m}\) the work done to rotate the electric dipolefrom theequilibrium position by \(180^{\circ}\) is

1 \(3 \times 10^{-23}\)
2 \(6 \times 10^{-23} \mathrm{~J}\)
3 \(12 \times 10^{-23} \mathrm{I}\)
4 Zero
Electric Charges and Fields

267993 Two opposite and equal charges\(4 \times 10^{-8}\) coulomb when placed \(2 \times 10^{-2} \mathrm{~cm}\) away, from a dipole. If this dipole is placed in an external electric field \(\times 10^{-2}\) newton/coulomb, the value of maximum torque and thework donein rotating it through \(180^{\circ}\) will be

1 \(32 \times 10^{-4} \mathrm{Nm}\) and \(32 \times 10^{-4} \mathrm{~J}\)
2 \(64 \times 10^{-4} \mathrm{Nm}\) and \(64 \times 10^{-4} \mathrm{~J}\)
3 \(64 \times 10^{-4} \mathrm{Nm}\) and \(32 \times 10^{-4} \mathrm{~J}\)
4 \(32 \times 10^{-4} \mathrm{~J}\) and \(64 \times 10^{-4} \mathrm{Nm}\)
Electric Charges and Fields

267990 A small electric dipole is placed at origin with its dipole moment directed along positive\(x\) axis. The direction of electric field at point \((2,2 \sqrt{2}, 0)\) is

1 alongz - axis
2 along\(y\) - axis
3 alongnegativey-axis
4 alongnegativez-axis
Electric Charges and Fields

267991 Two electric dipoles each ofdipolemoment \(p=6.2 \times 10^{-30} \mathrm{C}-\mathrm{m}\) are placed with their axis along the same line and their centres at a distanced \(=10^{-8} \mathrm{~cm}\). The force of attraction between dipoles is

1 \(2.1 \times 10^{-16} \mathrm{~N}\)
2 \(2.1 \times 10^{-12} \mathrm{~N}\)
3 \(2.1 \times 10^{-10} \mathrm{~N}\)
4 \(2.1 \times 10^{-8} \mathrm{~N}\)
Electric Charges and Fields

267992 Two charges\(+3.2 \times 10^{-19} \mathrm{C}\) and \(-3.2 \times 10^{-19} \mathrm{C}\) placed \(2.4 A^{0}\) apart form an electric dipole. It is placed in a uniform electric field of intensity \(4 \times 10^{5} \mathrm{~V} / \mathrm{m}\) the work done to rotate the electric dipolefrom theequilibrium position by \(180^{\circ}\) is

1 \(3 \times 10^{-23}\)
2 \(6 \times 10^{-23} \mathrm{~J}\)
3 \(12 \times 10^{-23} \mathrm{I}\)
4 Zero
Electric Charges and Fields

267993 Two opposite and equal charges\(4 \times 10^{-8}\) coulomb when placed \(2 \times 10^{-2} \mathrm{~cm}\) away, from a dipole. If this dipole is placed in an external electric field \(\times 10^{-2}\) newton/coulomb, the value of maximum torque and thework donein rotating it through \(180^{\circ}\) will be

1 \(32 \times 10^{-4} \mathrm{Nm}\) and \(32 \times 10^{-4} \mathrm{~J}\)
2 \(64 \times 10^{-4} \mathrm{Nm}\) and \(64 \times 10^{-4} \mathrm{~J}\)
3 \(64 \times 10^{-4} \mathrm{Nm}\) and \(32 \times 10^{-4} \mathrm{~J}\)
4 \(32 \times 10^{-4} \mathrm{~J}\) and \(64 \times 10^{-4} \mathrm{Nm}\)
Electric Charges and Fields

267990 A small electric dipole is placed at origin with its dipole moment directed along positive\(x\) axis. The direction of electric field at point \((2,2 \sqrt{2}, 0)\) is

1 alongz - axis
2 along\(y\) - axis
3 alongnegativey-axis
4 alongnegativez-axis
Electric Charges and Fields

267991 Two electric dipoles each ofdipolemoment \(p=6.2 \times 10^{-30} \mathrm{C}-\mathrm{m}\) are placed with their axis along the same line and their centres at a distanced \(=10^{-8} \mathrm{~cm}\). The force of attraction between dipoles is

1 \(2.1 \times 10^{-16} \mathrm{~N}\)
2 \(2.1 \times 10^{-12} \mathrm{~N}\)
3 \(2.1 \times 10^{-10} \mathrm{~N}\)
4 \(2.1 \times 10^{-8} \mathrm{~N}\)
Electric Charges and Fields

267992 Two charges\(+3.2 \times 10^{-19} \mathrm{C}\) and \(-3.2 \times 10^{-19} \mathrm{C}\) placed \(2.4 A^{0}\) apart form an electric dipole. It is placed in a uniform electric field of intensity \(4 \times 10^{5} \mathrm{~V} / \mathrm{m}\) the work done to rotate the electric dipolefrom theequilibrium position by \(180^{\circ}\) is

1 \(3 \times 10^{-23}\)
2 \(6 \times 10^{-23} \mathrm{~J}\)
3 \(12 \times 10^{-23} \mathrm{I}\)
4 Zero
Electric Charges and Fields

267993 Two opposite and equal charges\(4 \times 10^{-8}\) coulomb when placed \(2 \times 10^{-2} \mathrm{~cm}\) away, from a dipole. If this dipole is placed in an external electric field \(\times 10^{-2}\) newton/coulomb, the value of maximum torque and thework donein rotating it through \(180^{\circ}\) will be

1 \(32 \times 10^{-4} \mathrm{Nm}\) and \(32 \times 10^{-4} \mathrm{~J}\)
2 \(64 \times 10^{-4} \mathrm{Nm}\) and \(64 \times 10^{-4} \mathrm{~J}\)
3 \(64 \times 10^{-4} \mathrm{Nm}\) and \(32 \times 10^{-4} \mathrm{~J}\)
4 \(32 \times 10^{-4} \mathrm{~J}\) and \(64 \times 10^{-4} \mathrm{Nm}\)
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Electric Charges and Fields

267990 A small electric dipole is placed at origin with its dipole moment directed along positive\(x\) axis. The direction of electric field at point \((2,2 \sqrt{2}, 0)\) is

1 alongz - axis
2 along\(y\) - axis
3 alongnegativey-axis
4 alongnegativez-axis
Electric Charges and Fields

267991 Two electric dipoles each ofdipolemoment \(p=6.2 \times 10^{-30} \mathrm{C}-\mathrm{m}\) are placed with their axis along the same line and their centres at a distanced \(=10^{-8} \mathrm{~cm}\). The force of attraction between dipoles is

1 \(2.1 \times 10^{-16} \mathrm{~N}\)
2 \(2.1 \times 10^{-12} \mathrm{~N}\)
3 \(2.1 \times 10^{-10} \mathrm{~N}\)
4 \(2.1 \times 10^{-8} \mathrm{~N}\)
Electric Charges and Fields

267992 Two charges\(+3.2 \times 10^{-19} \mathrm{C}\) and \(-3.2 \times 10^{-19} \mathrm{C}\) placed \(2.4 A^{0}\) apart form an electric dipole. It is placed in a uniform electric field of intensity \(4 \times 10^{5} \mathrm{~V} / \mathrm{m}\) the work done to rotate the electric dipolefrom theequilibrium position by \(180^{\circ}\) is

1 \(3 \times 10^{-23}\)
2 \(6 \times 10^{-23} \mathrm{~J}\)
3 \(12 \times 10^{-23} \mathrm{I}\)
4 Zero
Electric Charges and Fields

267993 Two opposite and equal charges\(4 \times 10^{-8}\) coulomb when placed \(2 \times 10^{-2} \mathrm{~cm}\) away, from a dipole. If this dipole is placed in an external electric field \(\times 10^{-2}\) newton/coulomb, the value of maximum torque and thework donein rotating it through \(180^{\circ}\) will be

1 \(32 \times 10^{-4} \mathrm{Nm}\) and \(32 \times 10^{-4} \mathrm{~J}\)
2 \(64 \times 10^{-4} \mathrm{Nm}\) and \(64 \times 10^{-4} \mathrm{~J}\)
3 \(64 \times 10^{-4} \mathrm{Nm}\) and \(32 \times 10^{-4} \mathrm{~J}\)
4 \(32 \times 10^{-4} \mathrm{~J}\) and \(64 \times 10^{-4} \mathrm{Nm}\)