H3 Physics: Electric and Magnetic Fields structured questions

Learning objectives

• show an understanding that ideal conductors form an equipotential volume, and that the electric field within an ideal conductor is zero
• show an understanding that electric charge accumulates on the surfaces of a conductor, and that the electric field at the surface of a conductor is normal to the surface
• recall and apply Gauss’s law 6 for electric and magnetic fields (knowledge of the differential form of Gauss’s law is not required), and
• recall and apply Ampère’s law 7 relating the line integral of the magnetic field (in a vacuum) around a closed loop with the electric current enclosed by the loop to solve problems involving symmetric field configurations (knowledge of the differential form of Ampère’s law is not required) [Note further that candidates are not required to know Maxwell’s generalisation of Ampère’s law including the term related to the rate of change of electric flux, nor the Biot-Savart law.]
• define the magnitude of the electric dipole moment as the product of the charge and the separation
• show an understanding of and use the torque on an electric dipole and the potential energy of an electric dipole to solve related problems
• define the magnitude of the magnetic dipole moment for a current loop as the product of the current and the area of the loop
• show an understanding of and use the torque on a magnetic dipole and the potential energy of a magnetic dipole to solve related problems
• solve problems involving symmetric charge distributions by relating the electric flux (in a vacuum) through a closed surface with the charge enclosed by that surface (ii) show an understanding that the magnetic flux through a closed surface is always zero, suggesting the non-existence of magnetic monopoles