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Question:

Find the direction of the force on a negative charge for each diagram shown in Fig. 20–52, where $\vec{v}$ (green) is the velocity of the charge and $\vec{B}$ (blue) is the direction of the magnetic field. ($\otimes$ means the vector points inward. $\odot$ means it points outward, toward you.)

Figure 20-52 (a).

Figure 20-52 (b).

Figure 20-52 (c).

Figure 20-52 (d).

Figure 20-52 (e).

Figure 20-52 (f).

Source: Giancoli, Douglas C., Physics: Principles with Applications, 7th Edition, 2014.