Question

What role does displacement current have in radio wave transmission?

Options

• Changing electric fields create magnetic fields via displacement current, allowing EM waves to propagate.

• EM waves require charge to flow through every region they cross.

• Constant electric fields create magnetic fields via displacement current.

• Displacement current stops EM waves from propagating.

Answer 1

Maxwell predicted that changing electric fields create magnetic fields via displacement current. This effect helps explain the propagation of EM waves.