A uniform magnetic field B is confined to a cylindrical region and increases at a constant rate. What is the instantaneous acceleration direction of an electron placed at point P?

Question

G1 Physics · Accepted Answer

Magnetic flux is Φ=∫B⃗·dA⃗ and induced emf is ε=-dΦ/dt. Apply Lenz’s law for direction and I=ε/R when the circuit is resistive. This gives towards right.