Question

1. The magnetic field points into the page in a cylindrical region bounded by the dashed line in the drawing at right. An electron, initially at rest, sits at the position marked A inside and near the top of the solenoid. a) If the magnetic field magnitude increases, how is the electron at P accelerated? (circle ans.): out of page doesn't move upward downward to right b) If it accelerates, explain what caused it to do so: to left into page c) Next, take the electron away. Place a proton, initially at rest, at the position marked B outside and to the right of the cylindrical region. If the magnetic field magnitude decreases, how is the proton at B accelerated? (circle ans.): doesn't move upward downward to right to left into page out of page

Answer 1

Magnetic field increases Hence electron were more towards right to right The induced electric field, anti clock wise will cause electron to move towards right magnetic field decreases to right