When the force, the magnetic field and the current are all mutually perpendicular to each other, the directions of each can be represented by Fleming’s left–hand rule, as shown in Fig. 1.1.
Fig. 1.1
State what is represented by the direction of
Fig. 1.2 shows a magnetic field.
Fig. 1.2
Fig. 1.3
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When a moving charge enters a magnetic field the magnetic field produces a force on the charge, which can be calculated using
State the name and equation of the force that causes the charge to move in a circular orbit.
When the electron enters the magnetic field, its speed is 3.0 × 106 m s–1. The magnetic field has a magnetic flux density of 3.2 × 10–3 T.
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