Helpp mee

Give me an example of opportunity cost.

A player attends baseball training to be a better player instead of taking a vacation. The opportunity cost was the vacation.

Jill decides to take the bus to work instead of driving. It takes her 60 minutes to get there on the bus and driving would have been 40, so her opportunity cost is 20 minutes.

have a luvly day!

can you elaborate on what the question asks?

the direction of the magnetic field produced by an electric current will change when the direction of the electric current changes. for example : if a current is flowing in a straight length of wire, the magnetic field is described by a concentric circle (using right-hand rule).