162371 A regular hexagon of side \(\mathbf{1 0} \mathrm{cm}\) has a charge \(5 \mu \mathrm{C}\) at each of its vertices. Calculate the potential at the centre of the hexagon.

162401 The potential difference between points \(A\) and \(B\) \(\left(V_B-V_A\right)\) in the figure if \(R=0.7 \Omega\) is :

162369 A molecule of a substance has a permanent electric dipole moment of magnitude \(10^{-29} \mathrm{~cm}\). A mole of this substance is polarised (at low temperature) by applying a strong electrostatic field of magnitude \(10^6 \mathrm{~V} \mathrm{~m}^{-1}\). The direction of the field is suddenly changed by an angle of \(60^{\circ}\). Estimate the heat released by the substance in aligning its dipoles along the new direction of the field (only magnitude). For simplicity, assume \(100 \%\) polarisation of the sample.

162365 Calculate the potential at a point \(P\) due to a charge of \(4 \times 10^{-7} \mathrm{C}\) located \(9 \mathrm{~cm}\) away.

162366 Two charges \(3 \times 10^{-8} \mathrm{C}\) and \(-2 \times 10^{-8} \mathrm{C}\) are located \(15 \mathrm{~cm}\) apart. At what point on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.

162371 A regular hexagon of side \(\mathbf{1 0} \mathrm{cm}\) has a charge \(5 \mu \mathrm{C}\) at each of its vertices. Calculate the potential at the centre of the hexagon.

162401 The potential difference between points \(A\) and \(B\) \(\left(V_B-V_A\right)\) in the figure if \(R=0.7 \Omega\) is :

162369 A molecule of a substance has a permanent electric dipole moment of magnitude \(10^{-29} \mathrm{~cm}\). A mole of this substance is polarised (at low temperature) by applying a strong electrostatic field of magnitude \(10^6 \mathrm{~V} \mathrm{~m}^{-1}\). The direction of the field is suddenly changed by an angle of \(60^{\circ}\). Estimate the heat released by the substance in aligning its dipoles along the new direction of the field (only magnitude). For simplicity, assume \(100 \%\) polarisation of the sample.

162365 Calculate the potential at a point \(P\) due to a charge of \(4 \times 10^{-7} \mathrm{C}\) located \(9 \mathrm{~cm}\) away.

162366 Two charges \(3 \times 10^{-8} \mathrm{C}\) and \(-2 \times 10^{-8} \mathrm{C}\) are located \(15 \mathrm{~cm}\) apart. At what point on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.

162371 A regular hexagon of side \(\mathbf{1 0} \mathrm{cm}\) has a charge \(5 \mu \mathrm{C}\) at each of its vertices. Calculate the potential at the centre of the hexagon.

162401 The potential difference between points \(A\) and \(B\) \(\left(V_B-V_A\right)\) in the figure if \(R=0.7 \Omega\) is :

162369 A molecule of a substance has a permanent electric dipole moment of magnitude \(10^{-29} \mathrm{~cm}\). A mole of this substance is polarised (at low temperature) by applying a strong electrostatic field of magnitude \(10^6 \mathrm{~V} \mathrm{~m}^{-1}\). The direction of the field is suddenly changed by an angle of \(60^{\circ}\). Estimate the heat released by the substance in aligning its dipoles along the new direction of the field (only magnitude). For simplicity, assume \(100 \%\) polarisation of the sample.

162365 Calculate the potential at a point \(P\) due to a charge of \(4 \times 10^{-7} \mathrm{C}\) located \(9 \mathrm{~cm}\) away.

162366 Two charges \(3 \times 10^{-8} \mathrm{C}\) and \(-2 \times 10^{-8} \mathrm{C}\) are located \(15 \mathrm{~cm}\) apart. At what point on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.

162371 A regular hexagon of side \(\mathbf{1 0} \mathrm{cm}\) has a charge \(5 \mu \mathrm{C}\) at each of its vertices. Calculate the potential at the centre of the hexagon.

162401 The potential difference between points \(A\) and \(B\) \(\left(V_B-V_A\right)\) in the figure if \(R=0.7 \Omega\) is :

162369 A molecule of a substance has a permanent electric dipole moment of magnitude \(10^{-29} \mathrm{~cm}\). A mole of this substance is polarised (at low temperature) by applying a strong electrostatic field of magnitude \(10^6 \mathrm{~V} \mathrm{~m}^{-1}\). The direction of the field is suddenly changed by an angle of \(60^{\circ}\). Estimate the heat released by the substance in aligning its dipoles along the new direction of the field (only magnitude). For simplicity, assume \(100 \%\) polarisation of the sample.

162365 Calculate the potential at a point \(P\) due to a charge of \(4 \times 10^{-7} \mathrm{C}\) located \(9 \mathrm{~cm}\) away.

162366 Two charges \(3 \times 10^{-8} \mathrm{C}\) and \(-2 \times 10^{-8} \mathrm{C}\) are located \(15 \mathrm{~cm}\) apart. At what point on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.

162371 A regular hexagon of side \(\mathbf{1 0} \mathrm{cm}\) has a charge \(5 \mu \mathrm{C}\) at each of its vertices. Calculate the potential at the centre of the hexagon.

162401 The potential difference between points \(A\) and \(B\) \(\left(V_B-V_A\right)\) in the figure if \(R=0.7 \Omega\) is :

162369 A molecule of a substance has a permanent electric dipole moment of magnitude \(10^{-29} \mathrm{~cm}\). A mole of this substance is polarised (at low temperature) by applying a strong electrostatic field of magnitude \(10^6 \mathrm{~V} \mathrm{~m}^{-1}\). The direction of the field is suddenly changed by an angle of \(60^{\circ}\). Estimate the heat released by the substance in aligning its dipoles along the new direction of the field (only magnitude). For simplicity, assume \(100 \%\) polarisation of the sample.

162365 Calculate the potential at a point \(P\) due to a charge of \(4 \times 10^{-7} \mathrm{C}\) located \(9 \mathrm{~cm}\) away.

162366 Two charges \(3 \times 10^{-8} \mathrm{C}\) and \(-2 \times 10^{-8} \mathrm{C}\) are located \(15 \mathrm{~cm}\) apart. At what point on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.