# Problem: Which of the following statements are true concerning electromagnetic induction? Check all that apply.A. It is possible to induce a current in a closed loop of wire located in a uniform magnetic field by either increasing or decreasing the area enclosed by the loop. B. It is possible to induce a current in a closed loop of wire by change the orientation of a magnetic field enclosed by the wire.C. It is possible to induce a current in a closed loop of wire by changing the strength of a magnetic field enclosed by the wire. D. It is possible to induce a current in a closed loop of wire without the aid of a power supply or battery. E. It is possible to induce a current in a closed loop of wire located in a uniform magnetic field.

###### FREE Expert Solution

Magnetic flux:

$\overline{){{\mathbf{\varphi }}}_{{\mathbf{B}}}{\mathbf{=}}{\mathbf{B}}{\mathbf{A}}{\mathbf{c}}{\mathbf{o}}{\mathbf{s}}{\mathbf{\theta }}}$

A current is induced in a closed loop if the magnetic flux changes with time.

The flux changes if any of the following changes:

• the strength of the magnetic field
• Area of the loop
• The angle between the magnetic field and the area
###### Problem Details

Which of the following statements are true concerning electromagnetic induction? Check all that apply.

A. It is possible to induce a current in a closed loop of wire located in a uniform magnetic field by either increasing or decreasing the area enclosed by the loop.

B. It is possible to induce a current in a closed loop of wire by change the orientation of a magnetic field enclosed by the wire.

C. It is possible to induce a current in a closed loop of wire by changing the strength of a magnetic field enclosed by the wire.

D. It is possible to induce a current in a closed loop of wire without the aid of a power supply or battery.

E. It is possible to induce a current in a closed loop of wire located in a uniform magnetic field.