Which type of current is produced by a wire breaking magnetic field lines and changing the polarity? a. alternating b. direct c. straight d. alternating and direct

Answer : Alternating current

Explanation :  Alternating current will produced by a wire breaking magnetic field lines and changing the polarity.

Because  according to Faraday's law when the magnetic field interact with the electric circuit then produce an emf that means induced a current in a circuit.  and when polarity will change then direction of current will reverse.

So, this current called alternating current.

see the picture for the vector

the magnitude of the vector by pythagorean theorem

r = √( (-10)^2 + (3)^2 ) = √109

magnitude = √109 units

the direction angle between vector and x-axis is

tan^(-1)(3/10) = 16.699

so the direction is approximately 16.7 degrees north of west