358015 A positively charged sphere of radius \({r_0}\) carries a volume charge density \(\rho \). A spherical cavity of radius \({r_0}/2\) is then scooped out and left empty.\({C_1}\) is the centre of the sphere and \({C_2}\) that of the cavity. What is the direction and magnitude of the electric field at point \(B\)?

358016 A conducting sphere of radius \(20\,cm\) has a known charge. If the electric field at a distance \(40\,cm\) from the centre of the sphere is \(1.2 \times {10^3}\,N{C^{ - 1}}\) and points radially inwards. The net charge on the sphere is:

358017 A spherical portion has been removed from a solid sphere having a charge distributed uniformly in its volume in the figure. The electric field inside the emptied space is

358018 \(4 \times {10^{10}}\) electrons are removed from a neutral metal sphere of diameter \(20\,cm\) placed in air. The magnitude of the electric field (in \(N{C^{ - 1}}\)) at a distance of 20 \(cm\) from its centre is

358019 \(\sigma \) is the uniform surface charge density of a thin spherical shell of radius \(R\). The electric field at any point on the surface of the spherical shell is

358015 A positively charged sphere of radius \({r_0}\) carries a volume charge density \(\rho \). A spherical cavity of radius \({r_0}/2\) is then scooped out and left empty.\({C_1}\) is the centre of the sphere and \({C_2}\) that of the cavity. What is the direction and magnitude of the electric field at point \(B\)?

358016 A conducting sphere of radius \(20\,cm\) has a known charge. If the electric field at a distance \(40\,cm\) from the centre of the sphere is \(1.2 \times {10^3}\,N{C^{ - 1}}\) and points radially inwards. The net charge on the sphere is:

358017 A spherical portion has been removed from a solid sphere having a charge distributed uniformly in its volume in the figure. The electric field inside the emptied space is

358018 \(4 \times {10^{10}}\) electrons are removed from a neutral metal sphere of diameter \(20\,cm\) placed in air. The magnitude of the electric field (in \(N{C^{ - 1}}\)) at a distance of 20 \(cm\) from its centre is

358019 \(\sigma \) is the uniform surface charge density of a thin spherical shell of radius \(R\). The electric field at any point on the surface of the spherical shell is

358015 A positively charged sphere of radius \({r_0}\) carries a volume charge density \(\rho \). A spherical cavity of radius \({r_0}/2\) is then scooped out and left empty.\({C_1}\) is the centre of the sphere and \({C_2}\) that of the cavity. What is the direction and magnitude of the electric field at point \(B\)?

358016 A conducting sphere of radius \(20\,cm\) has a known charge. If the electric field at a distance \(40\,cm\) from the centre of the sphere is \(1.2 \times {10^3}\,N{C^{ - 1}}\) and points radially inwards. The net charge on the sphere is:

358017 A spherical portion has been removed from a solid sphere having a charge distributed uniformly in its volume in the figure. The electric field inside the emptied space is

358018 \(4 \times {10^{10}}\) electrons are removed from a neutral metal sphere of diameter \(20\,cm\) placed in air. The magnitude of the electric field (in \(N{C^{ - 1}}\)) at a distance of 20 \(cm\) from its centre is

358019 \(\sigma \) is the uniform surface charge density of a thin spherical shell of radius \(R\). The electric field at any point on the surface of the spherical shell is

358015 A positively charged sphere of radius \({r_0}\) carries a volume charge density \(\rho \). A spherical cavity of radius \({r_0}/2\) is then scooped out and left empty.\({C_1}\) is the centre of the sphere and \({C_2}\) that of the cavity. What is the direction and magnitude of the electric field at point \(B\)?

358016 A conducting sphere of radius \(20\,cm\) has a known charge. If the electric field at a distance \(40\,cm\) from the centre of the sphere is \(1.2 \times {10^3}\,N{C^{ - 1}}\) and points radially inwards. The net charge on the sphere is:

358017 A spherical portion has been removed from a solid sphere having a charge distributed uniformly in its volume in the figure. The electric field inside the emptied space is

358018 \(4 \times {10^{10}}\) electrons are removed from a neutral metal sphere of diameter \(20\,cm\) placed in air. The magnitude of the electric field (in \(N{C^{ - 1}}\)) at a distance of 20 \(cm\) from its centre is

358019 \(\sigma \) is the uniform surface charge density of a thin spherical shell of radius \(R\). The electric field at any point on the surface of the spherical shell is

358015 A positively charged sphere of radius \({r_0}\) carries a volume charge density \(\rho \). A spherical cavity of radius \({r_0}/2\) is then scooped out and left empty.\({C_1}\) is the centre of the sphere and \({C_2}\) that of the cavity. What is the direction and magnitude of the electric field at point \(B\)?

358016 A conducting sphere of radius \(20\,cm\) has a known charge. If the electric field at a distance \(40\,cm\) from the centre of the sphere is \(1.2 \times {10^3}\,N{C^{ - 1}}\) and points radially inwards. The net charge on the sphere is:

358017 A spherical portion has been removed from a solid sphere having a charge distributed uniformly in its volume in the figure. The electric field inside the emptied space is

358018 \(4 \times {10^{10}}\) electrons are removed from a neutral metal sphere of diameter \(20\,cm\) placed in air. The magnitude of the electric field (in \(N{C^{ - 1}}\)) at a distance of 20 \(cm\) from its centre is

358019 \(\sigma \) is the uniform surface charge density of a thin spherical shell of radius \(R\). The electric field at any point on the surface of the spherical shell is