Electromagnets can be used to lock doors. how could an engineer increase the strength of an electromagnetic lock? check all that apply

a. by increasing the current through the wire

b. by reversing the current through the electromagnet

c. by adding more coils to the electromagnet

d. by increasing the space between the coils in the electromagnet

Aloop of wire is in a magnetic field such that its axis is parallel with the field direction. which of the following would result in an induced emf in the loop? choose all that apply. a loop of wire is in a magnetic field such that its axis is parallel with the field direction. which of the following would result in an induced emf in the loop? choose all that apply. moving the loop outside of the magnetic field region. spin the loop such that its axis does not consistently line up with the magnetic field direction. change the magnitude of the magnetic field. change the diameter of the loop