What generates the magnetic field in a current carrying wire?
(a)stationary protons
(b)stationary electrons
(c)movement of charged particles
(d)magnetic force

I'd say it was C. but normally it's caused by the movement of electrons and electrons are negative. so I'm not really sure about this one

The correct answer is "movement of charged particles".

Explanation:

A current carrying wire generates the magnetic field around it.

Suppose, there is a straight long current carrying wire. Pass it through the cardboard. Sprinkle the iron filling around the wire. The iron filling gets attracted towards the current carrying wire due to the presence of magnetic field around it. The iron filling will arrange in the concentric circles. The pattern of the magnetic field are in concentric circles.

The flow of charges constitutes the current.

If there is no current flowing in the wire then there is no magnetic field around the wire.

Therefore, the movement of the charged particles generates the magnetic field in a current carrying wire. The correct option is (C).

The correct option is B. A medium refers to a material that are used to create a work of art. Artists use media to create work of art in order to communicate their ideas. Some examples of media are oil paint, tempera, emulsion, water colour, pastel, fresco, acrylic, marble and bronze. For sculpture, there are two types of medium, hard and soft medium.