Which is true about moving charges? A) The direction of movement of the charge determines the direction of the magnetic field it produces B They always produce magnetic fields C They only produce magnetic fields when the material in which they move is heated D They are neutralized by magnetic fields

B They always produce magnetic fields

Explanation:

When a charge is moving, it produces an electric field owing to the fact that it is a charged particle. In addition to this, it also produces a magnetic field.

This is well captured in the basics of electrostatics and special relativity. The fact that a moving charge produces a magnetic force can also be proven mathematically.

Hence, among the options, it is true that a moving charge always produce magnetic fields

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods