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The force a magnet exerts on another magnet, on iron or a similar metal, or on moving charges is
an electric force.
a magnetic force.
proportional to the charge of the magnet.
proportional to the mass of the magnet.

If the current in a wire is directed upward, what is the direction of the magnetic field produced by the current?
counterclockwise in the horizontal plane
clockwise in the horizontal plane
in the same direction as the current
in the opposite direction to the current

Answer :

Answer;

Proportional to the charge of the magnet

Explanation;

  • A magnet is a substance or a material that has the capability of producing magnetic field. Magnets may repel or attract poles of another magnet. based on the basic law of magnetism, like poles of magnets repel each other while unlike poles of magnets attracts each other.
  • Therefore, magnets exerts forces on each other. These forces of attraction field of magnets are as a result of currents of electrically charge electrons orbiting in the nuclei of the particles that are in the material making up the magnet. The strength of these forces is proportional to the charge of the magnet.

Answer;

counterclockwise in the horizontal plane

Explanation;

  • Using the right hand grip rule, the direction of magnetic field produced by a current carrying conductor or wire can be determined.
  • Right hand grip states that if one grasps the wire or the conductor using the right hand, such that the thumb points the direction of the current, then the other four fingers shows or points the direction of the magnetic field produced.
  • Therefore, if the direction of the current is upward then using the right hand grip rule the direction of magnetic field will be counter clockwise on a horizontal plane.

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