An electron flies across the field lines between magnet poles. Does it feel a force?
A small plastic bead carries an electric charge. It hangs from a thread between the poles of a strong magnet, perfectly still.
The bead hangs at rest between the poles. The field is strong, and the bead feels no magnetic force.
The bead is set swinging, so it moves across the field lines. Now it feels a magnetic force.
The bead comes back to rest. The magnetic force is gone again.
The field's strength does not change this. At rest, the magnetic force is zero in any field.
The bead still has weight, and the thread still exerts a force on it. Only the magnetic force is zero.
A charged dust grain floats at rest between magnet poles. Does it feel a magnetic force?
A student says a strong enough field pushes on a charge even at rest. Is the student correct?
A charged sphere sits stationary between the poles of a very strong magnet. What magnetic force acts on it?
The sphere is charged but not moving.
A charge at rest feels no magnetic force, however strong the field.
No magnetic force acts on the sphere: zero.
The same sphere is thrown so it crosses the field lines. Does it feel a magnetic force while it moves?
The sphere is charged and now moving.
Its motion crosses the field lines.
A moving charge crossing the field lines feels a magnetic force.
Yes. While it moves, a magnetic force acts on it.
A student says a charge feels a magnetic force only while it is moving. Is the student correct?
Which object experiences a magnetic force between magnet poles?
A charged ball at rest between magnet poles is pushed so it swings across the field lines. Which statement is correct?
A charged droplet drifts to a stop between strong magnet poles. At that moment, which statement is correct?