Q:How to select power adapter

if you look at symbol and laptops are not the same, it is absolutely impossible.

Q:Effect of inductor

If there is no current in the inductor, it prevents the current from flowing through it; if the current flows through it, it will attempt to maintain the current when the circuit is disconnected.

Q:Inductor and inductor coil is not a concept

So the inductor and inductor coil can be considered the same, some different

Q:Why use inductance

through DC, AC resistance" refined commentary: in electronic circuits, inductance coil of AC current limiting effect

Q:Inductance has no direction?

When the reverse will appear inductance direction.

Q:Main parameters of inductor

Inductance inductance of the size, mainly depends on the number of coils (turns), winding method, with or without the core and core materials, etc.

Q:Inductance works?

When the current in the coil is changed, the magnetic fields around also produced corresponding changes, this change can make the magnetic field coil induced electromotive force (EMF is used to represent the terminal voltage of the active element of ideal power source, this is the self).

Q:Inductance and capacitance how to understand?

Inductance is a property of a closed loop. When the coil passes through the current, a magnetic field is formed in the coil, and the induced magnetic field generates an induced current to resist the current flowing through the coil.

Q:What is the power adapter

The power adapter (also called the external power switch power adapter)

Q:What is inductance effect

Any current in the circuit produces a magnetic field, and the magnetic flux of the magnetic field acts on the circuit.