Motion in Electromagnetic Fields · Paper 1 — Free Physics SL Practice Questions

A circular loop of wire with area $0.025\,\text{m}^2$ is held in a uniform magnetic field of flux density $0.40\,\text{T}$. The plane of the loop is perpendicular to the field lines. What is the magnetic flux through the loop?

A square coil of side $0.10\,\text{m}$ is placed in a uniform magnetic field of strength $0.50\,\text{T}$. The normal to the plane of the coil makes angle of $60°$ with the magnetic field. What is the magnetic flux through the coil?

A horizontal wire of length $0.15\ \text{m}$ carries a current of $2.0\ \text{A}$ directed from west to east. The wire is placed in a uniform magnetic field of $0.50\ \text{T}$ directed vertically upward. What is the magnitude and direction of the magnetic force acting on the wire?

A beam of protons travels horizontally to the right and enters a region of uniform magnetic field directed perpendicularly into the page. What is the direction of the magnetic force acting on the protons?