Which of Maxwell's four equations was derived from observations of each of the following:
• bar magnets
• wire loops carrying electrical current
• two different materials being rubbed together
• the effects of a current-carrying wire coil on a nearby coil

State the right hand rule of the direction of magnetic field in a conductor carrying current

Acoil formed by wrapping 80 turns of wire in the shape of a square is positioned in a magnetic field so that the normal to the plane of the coil makes an angle of 28.0° with the direction of the field. when the magnetic field is increased uniformly from 200 µt to 600 µt in 0.400 as, an emf of magnitude 80.0 mv is induced in the coil. what is the total length of the wire?

Acar traveling at 22 m/s starts to decelerate steadily. it comes to a complete stop in 15 seconds. what is it’s acceleration?