If a charge travels through a magnetic field, it experiences a magnetic force and its velocity is perpendicular to the direction of the magnetic field. Answer the following questions about the situations given below. What is the direction of the force on a positive charge when passing through a magnetic field as indicated in the diagram? Explain how you got your answer.
+q ->(right arrow) v (downwards arrow)B

What is the direction of the magnetic field above and below the current-carrying wire below, where the current is flowing in the +x- direction? Explain how you got your answer
[image of a long arrow pointing to the right]

Why aren't the right-hand rules used to figure out the force exerted on particles traveling parallel to a magnetic field?​

In the future, people will only enjoy one sport: electrodisc. in this sport, you gain points when you cause metallic discs hovering on a field to exchange charge. you are an electrodisc player playing the popular four disc variant. the disks have charges of qa = −8.0 µc, qb = −2.0 µc, qc = +5.0 µc, and qd = +12.0 µc. (1) you bring two disks together and then separate them. you measure the resulting charge of these two disks and find that it is +5.0 µc per disk. which two disks did you bring together? (a) a and b (b) a and c (c)a and d (d)b and c(e) b and d (f) c and d. (2) you bring three disks together and then separate them. you measure the resulting charge of these three disks and find that it is +3.0 µc per disk. which three disks did you bring together? a, b, and c (a) a, b, and d (c) a, c, and d (d) b, c, and d. (3) given the resulting charge of each disk measured in (b) is +3.0 µc, how many electrons would you need to add to a disk of this charge to electrically neutralize it? electrons