Which one in the following is not one of the categories of wireless charging? It is _____.
A: electromagnetic radiation
B: inductive coupling
C: magnetic resonant coupling
D: electromagnetic induction
A: electromagnetic radiation
B: inductive coupling
C: magnetic resonant coupling
D: electromagnetic induction
举一反三
- The black hole is ( ), and no particle or electromagnetic radiation can escape from it.
- Which one of the following situations is not associated with the dysfunction of excitation-contraction coupling in myocardium? A: Acidosis B: The obstruction of L-type calcium channels C: The increased activity of myosin ATPase in myocardium D: The increased foetus troponin E: The decreased activity of sarco-endoplasmic reticulum calcium-ATPase
- An inward uniform magnetic field B is decreasing and a loop of wire is in the field. For the result of the electromagnetic induction, which of the following statements is correct?[img=119x108]1803a37611f4625.png[/img] A: The potential of end A is higher than that of C. B: The potential of end A is lower than that of C. C: The potential of end A is the same as that of C. D: Potential does not exist due to the absence of an electrostatic field.
- How is television different from radio A: Sound is changed into electromagnetic waves. B: Light is changed into electromagnetic waves. C: Both sound and light are changed into electromagnetic waves. D: Either sound or light is changed into electromagnetic waves.
- What kind of wave does ultrasound belong to and has certain radiation? A: Electromagnetic wave B: Mechanical wave C: Particle wave D: Light wave