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The beeping sound is caused by magnetic field variations resulting from the transient current circuit, that propagate to the speaker's buzzer.The reason that your multimeter is "averaging" the current, is that there is inevitably inductance of the wiring. Inductance acts like an "electrical inertia" that tries to keep currents constant. If currents try to change, they produce back-emf that hinders the change.
The beeping sound is caused by magnetic field variations resulting from the transient current circuit, that propagate to the speaker's buzzer.
The reason that your multimeter is "averaging" the current, is that there is inevitably inductance of the wiring. Inductance acts like an "electrical inertia" that tries to keep currents constant. If currents try to change, they produce back-emf that hinders the change.
